The concentration of the alkane C20H42 in a particular sample of rainwater is 0.13 ppb. Assume that the density of rainwater is close to 1.00 g/mL and find the molar concentration of C20H42.
The molar concentration of alkane C₂₀H₂₄ is 3.6731 x 10 ⁻⁵ M
A chemical species' concentration in a solution, specifically the amount of a solute per unit volume of solution, is measured by its molar concentration. The most used molarity unit in chemistry is the number of moles per liter, denoted by the unit symbol mol/L or mol/dm3 in SI units.
The Concentration of alkane C₂₀H₂₄ = 0.13 ppb
since 1 ppb =10⁻³ mg/L concentration of C₂₀H₂₄ is 1.3 x10⁻⁴ mg/L
Density of water = 1.00 g/mL
Molar concentration = mass / (molar mass x Volume)
Formula weight of C₂₀H₂₄= 282.55
Mass C₂₀H₂₄ = 1.3 x10⁻⁴ mg/L =1.3 x10⁻⁷g/L
Molar concentration = mass / (molar mass x Volume)
Molar concentration C₂₀H₂₄ = 1.3 x10⁻⁷g/L / 282.55 g / moles
Molar concentration C₂₀H₂₄ = 3.6731 x 10 ⁻⁵ M
Learn more about molar concentration at https://brainly.com/question/8445654
#SPJ4
Rutherford bombarded gold foil with alpha particles and found that a small percentage of the
particles were deflected. Which of the following was not accounted for by the model he proposed
for the structure of atoms?
A. the small size of the nucleus B. the charge on the nucleus
C. the total mass of the atom D. the existence of protons
E. the presence of electrons outside the nucleus
The following are not taken into account by the proposed model
for atomic structure Is B. the charge on the nucleus
What is atomic structure?Atomic structure is the basic unit of matter consisting of an atomic nucleus and a cloud of electrons with a negative charge surrounding it. In the nucleus of each atom, there is a mixture.
The mixture inside the atomic nucleus is a proton with a positive charge and a neutron with a neutral charge. Electrons that surround the atomic nucleus will be bound because of the electromagnetic force.
So if a small part of the alpha particle is found to be deflected, what is not taken into account by the atomic structure is the charge on the nucleus.
Learn more about the atomic structure of hydrogen here :
https://brainly.com/question/13089956
#SPJ4
Select the mechanism(s) where the concentration of the nucleophile has no effect on the reaction rate. SN1 SN2 E1 E2
The mechanisms where the concentration of the nucleophile has no effect on the reaction rate are SN1, SN2, E1, and E2.
SN1 and E1 reactions do not depend on the concentration of the nucleophile, as they use carbocations as intermediates. SN2 and E2 reactions are bimolecular processes, in which the nucleophile and substrate must collide in order for the reaction to occur, so the rate of the reaction depends on the concentration of both the nucleophile and the substrate.
The concentration of the nucleophile is a measure of the amount of nucleophile molecules in a given solution. In a nucleophilic substitution reaction, the nucleophile reacts with the substrate molecule (e.g. an alkyl halide) to form a new covalent bond.
Learn more about the concentration of the nucleophile:
https://brainly.com/question/9528254
#SPJ4
when setting up your experiment, choose... is added to the buret and choose... is pipetted into the erlenmeyer flask. one to two drops of choose... are added to the erlenmeyer flask along with additional water to bring the total volume to 50 ml before beginning the titration.
When setting up your experiment, sodium hydroxide is added to the buret and acetic acid is pipetted into the Erlenmeyer flask. one to two drops of phenolphthalein are added to the Erlenmeyer flask along with additional water to bring the total volume to 50 ml before beginning the titration.
Steps for conducting titration.
First of all pipette and burette should be rinsed 3 times with distilled water and then 3 times with the solution they will measure and transfer. Then after add suitable amount of indicator. This procedures should be consistent across all titrations; 3 drops is usual.
We must ensure that all glassware is properly cleaned and rinsed before beginning any analysis.
Erlenmeyer flasks are the flasks that are used to contain liquids and for mixing, heating, cooling, incubation, filtration, storage, and other liquid-handling processes. They have slanted sides and narrow necks which allow the contents to be mixed by swirling without the risk of spills, which is useful for titrations and for boiling liquids.
Learn more about Erlenmeyer flask from the link given below.
https://brainly.com/question/14729005
#SPJ4
A 2.25−L vessel contains 4.70 g of a gas at 1.00 atm and 27.0°C. (a) Calculate the density of the gas in g/L.
Put these steps in the mechanism of chymotrypsin catalysis in order from first to last. Note that your textbook may not break out each of these steps individually, but all steps should be ordered. (There will be eight steps.) A. His 57 catalyzes removal of H from Ser 195 hydroxyl. B. His 57 donates H to N of sissile peptide bond, tetrahedral intermediate decomposes. C. The portion (N-terminal end) of the original substrate with the new carboxylate terminus diffuses away. D. Water donates H to His 57. E. Resulting OH attacks carbonyl of remaining substrate. F. His 57 donates H to Ser 195 O, leading to collapse of thtrahedral intermediate. G. the portion (the C-terminal end) of original substrate with the new amino terminus diffuses away. H. Ser 195's nucleophilic O attacks carbonyl C of substrate.
The mechanism of chymotrypsin catalysis involves several steps:
Ser 195 attacks the carbonyl carbon of the substrate, forming a tetrahedral intermediate.His 57 removes a proton from the hydroxyl group of Ser 195.The tetrahedral intermediate collapses.Water donates a proton to His 57.His 57 donates a proton to the oxygen atom of Ser 195.The resulting hydroxyl group attacks the carbonyl carbon of the substrate.The original substrate is cleaved into two parts.Explanation: The mechanism of chymotrypsin catalysis is a multi-step process that involves several key amino acid residues in the active site of the enzyme. The steps in the mechanism are as follows:
The substrate binds to the active site of chymotrypsin and Ser 195, a nucleophilic residue in the enzyme, attacks the carbonyl carbon of the substrate. This forms a tetrahedral intermediate, which is stabilized by hydrogen bonds with the backbone amide groups of the enzyme.His 57, a basic residue in the enzyme, then removes a proton from the hydroxyl group of Ser 195, which helps to facilitate the reaction and stabilize the negative charge that develops on the oxygen atom of Ser 195.The tetrahedral intermediate then collapses, resulting in the cleavage of the peptide bond between the substrate residues. This releases the N-terminal end of the original substrate with a new carboxylate terminus.Water then donates a proton to His 57, regenerating its active form.His 57 then donates a proton to the oxygen atom of Ser 195, which is now in its deprotonated, negatively charged state. This helps to restore the active site of the enzyme and prepares it for the next round of catalysis.The resulting hydroxyl group of Ser 195 attacks the carbonyl carbon of the remaining substrate residue, forming another tetrahedral intermediate.The tetrahedral intermediate collapses again, resulting in the cleavage of the peptide bond between the substrate residues. This releases the C-terminal end of the original substrate with a new amino terminus.Overall, the mechanism of chymotrypsin catalysis involves a series of nucleophilic attacks, proton transfers, and intermediate stabilization, which work together to efficiently cleave peptide bonds in the substrate.
Learn more about the mechanism of chymotrypsin catalysis:
https://brainly.com/question/11477380
#SPJ4
The label on a concentrated drug solution indicates that it contains 85 mg of medication in 5 mL. If the patient is to receive 225 mg of medication, how much of the
solution should be given?
mL of concentrated drug solution should be given.
(Round to the nearest tenth as needed.)
A
45 mL of concentrated drug solution should be given to the patient to provide them with the required 225 mg of medication.
What is Concerntrated?Concentrated is a term used to refer to a substance that has had most of its components removed, leaving only the most essential or desirable parts remaining. This can be done through evaporation, filtration, distillation, or other methods. Concentration can be used to create a more powerful or intense form of a substance, such as a concentrated solution of a chemical or a concentrated form of medicine. Concentration can also be used to make a substance more concentrated, such as when water is evaporated from a juice to make a syrup.
To know more about Concentrated
https://brainly.com/question/17206790
#SPJ1
Anyone know this answer, homework due tomorrow
It takes 396 mL of 0.200 ppm stock solution to make 150.0 mL of a 0.0528 ppm solution.
What is benzene?The chemical compound benzene has the molecular formula C6H6 and is an organic chemical. It smells nice and is a colorless, extremely flammable liquid. In the chemical industry, benzene is frequently used as a solvent and as a raw material for the synthesis of numerous significant compounds, including dyes, plastics, synthetic fibres, rubber, and medicines.
How do you determine it?The dilution equation can be used to determine how much stock solution is required:
C1V1 = C2V2
Where C1 denotes the stock solution's concentration, V1 denotes its volume, C2 denotes the final solution's concentration, and V2 denotes the final solution's volume.
We are aware that V2 = 150.0 mL, C2 = 0.0528 ppm, and C1 = 0.200 ppm.
Using the formula V1 = (C2 * V2) / C1 = (0.0528 * 150) / 0.200 = 0.396 L = 396 mL, we can now determine V1.
In order to make 150.0 mL of a 0.0528 ppm solution, 396 mL of the stock solution are required.
To know more about benzene, visit:
https://brainly.com/question/13128557
#SPJ1
Here are the steps to solve this problem:
Step 1: Determine the amount of solute in the final solutionThe desired concentration of the final solution is 0.0528 ppm, which means there are 0.0528 parts of solute per million parts of solution. Since we want to prepare 150.0 mL of the final solution, we can calculate the amount of solute needed as follows:
Amount of solute = concentration x volumeAmount of solute = 0.0528 ppm x 150.0 mLAmount of solute = 0.00792 mgStep 2: Calculate the volume of the stock solution neededWe can use the dilution equation to calculate the volume of the stock solution needed:
C1V1 = C2V2where C1 is the concentration of the stock solution, V1 is the volume of the stock solution needed, C2 is the desired concentration of the final solution, and V2 is the volume of the final solution.
Substituting the values, we get:
0.200 ppm x V1 = 0.0528 ppm x 150.0 mLSimplifying the equation, we get:
V1 = (0.0528 ppm x 150.0 mL) / 0.200 ppmV1 = 39.6 mLTherefore, we need 39.6 mL of the stock solution to prepare 150.0 mL of a 0.0528 ppm solution by dilution with benzene.
Gaseous ammonia chemically reacts with oxygen (O₂) gas to produce nitrogen monoxide gas and water vapor. Calculate the moles of water produced by the
reaction of 0.095 mol of oxygen. Be sure your answer has a unit symbol, if necessary, and round it to the correct number of significant digits
Answer:
The balanced chemical equation for the reaction between gaseous ammonia and oxygen gas is:
4NH3 + 5O2 -> 4NO + 6H2O
From this equation, we can see that for every 4 moles of ammonia, 6 moles of water are produced. Thus, with 0.095 moles of oxygen, we can calculate the number of moles of water produced using the stoichiometric ratio of the reactants:
0.095 moles of O2 x (6 moles H2O/5 moles O2) = 0.114 moles H2O
Therefore, 0.114 moles of water are produced by the reaction of 0.095 moles of oxygen.
Osmosis is the net movement of molecules or atoms from a region of high concentration to a region of low concentration as a result of random motion of the molecules or atoms.Options are true or false.
Correct. Osmosis is the net movement of molecules or atoms from a region of high concentration to a region of low concentration as a result of random motion of the molecules or atoms.
Osmosis is defined as the diffusion of water or other solvents through a semipermeable membrane. If a solution is separated from the pure solvent by a membrane that is permeable to the solvent but not the solute then the solution will tend to become more dilute by absorbing solvent through the membrane. The osmosis process can be stopped by increasing the pressure on the solution by a specific amount called the osmotic pressure. It is a spontaneous passage. It is a vital process in biological systems as biological membranes are semipermeable. The membranes are impermeable to large and polar molecules such as ions, proteins while being permeable to non-polar or hydrophobic molecules like oxygen, carbon dioxide.
To learn more about Osmosis please visit:
https://brainly.com/question/2811191
#SPJ4
Determine the total number of electrons present in the atom, molecule or ion below and enter it as a whole number for your answer. HF
The total number of electrons present in Mg2+ is 10. This is because magnesium (Mg) is a Group 2 element, so it has 2 valence electrons. When Mg is in the +2 oxidation state, it has lost those 2 valence electrons and therefore has a net charge of +2.
What is number of electrons present in the atom, molecule or ion?Atoms are the smallest unit of an element that exhibit that element's properties. They are made up of negatively charged electrons revolving around a central nucleus made up of more massive positively charged protons and electrically neutral neutrons. When certain substances emit energetic rays and particles, this is referred to as radioactivity. Particles (helium nuclei), particles (electron ions moving quickly), and rays are three significant categories of radiation.
Covalent and ionic chemical bonds, which are fundamentally different from one another and result in very different properties for different substances. Chemical bonds—attractive electrostatic interactions that hold atoms in chemical compounds together—are what keep them connected. The types and numbers of atoms present are indicated in the molecular formula of a covalent compound. Both polyatomic and diatomic molecules have more than two atoms.
To learn more about electrons
https://brainly.com/question/26084288
#SPJ4
What product is formed when the compound is treated with LiAlH4 (followed by H2O)?
The product that is formed when a compound is treated with LiAlH4 (followed by H2O) depends on the structure of the compound.
LiAlH4 is a strong reducing agent, which means it can reduce functional groups containing carbonyl (C=O) and imine (C=N) groups to alcohols and amines, respectively. For example, if a ketone is treated with LiAlH4, the carbonyl group is reduced to an alcohol, producing a secondary or tertiary alcohol depending on the number of alkyl groups attached to the carbonyl carbon.
After the reaction with LiAlH4, the resulting alcohol is typically treated with water (H2O) to hydrolyze the intermediate species, regenerating the original functional group. This step helps to remove any unwanted side products and ensures the formation of a single product.
You can learn more about LiAlH4 at
https://brainly.com/question/14008466
#SPJ4
The reaction of ethanol ( CH3CH2OH
) with aqueous I−
in the presence of H+
ions produces the corresponding ethyl halide ( CH3CH2I
) and reaches completion:
H+ CH3CH2OH(l)+I−(aq)⟶CH3CH2I(l)+H2O(l)
However, the reaction of ethanol with aqueous I−
does not proceed:
CH3CH2OH(l)+I−(aq)⟶no reaction
Which of the following statements are correct with respect to these reactions?
The reaction of ethanol with aqueous I− is an acid-catalyzed reaction are correct with respect to these reactions.
What is ethanol?Ethanol is a type of alcohol created through the fermentation and distillation of carbohydrates such as grains or sugar cane. It is also known as ethyl alcohol or grain alcohol and is a common ingredient in alcoholic beverages. In its purest form, ethanol is a colorless and volatile liquid with a distinctive odor and taste. It is also flammable and can be used as a fuel for combustion engines. In the United States, it is the most widely used alternative fuel for cars and trucks due to its environmental benefits and lower cost. Additionally, ethanol is widely used in many industrial and chemical applications to produce a variety of products.
To learn more about ethanol
https://brainly.com/question/5750283
#SPJ1
Complete Question
The reaction of ethanol ( CH3CH2OH) with aqueous I−in the presence of H+ions produces the corresponding ethyl halide ( CH3CH2I) and reaches completion: H+ CH3CH2OH(l)+I−(aq)⟶CH3CH2I(l)+H2O(l)
However, the reaction of ethanol with aqueous I−does not proceed:
CH3CH2OH(l)+I−(aq)⟶no reaction
Which of the following statements are correct with respect to these reactions?
A) The reaction of ethanol with aqueous I− is an acid-catalyzed reaction.
B) The reaction of ethanol with aqueous I− requires an additional reactant.
C) The reaction of ethanol with aqueous I− is an oxidation reaction.
D) The reaction of ethanol with aqueous I− is an elimination reaction.
For the following reaction, 26.0 grams of diphosphorus pentoxide are allowed to react with 14.6 grams of water.
What is the maximum mass of phosphoric acid that can be formed?
Mass = g
What is the FORMULA for the limiting reactant?
What mass of the excess reagent remains after the reaction is complete?
Mass = g
According to the stoichiometry of the reaction, 4 moles of H3PO4 are formed from 1 mole of P4O10. Therefore, the number of moles of H3PO4 produced from 0.0916 moles of P4O10 is
mol H3PO4 = 4 x mol P4O10
moles H3PO4 = 4 x 0.0916 moles
Moles of H3PO4 = 0.3664 moles
Finally, the mass of H3PO4 produced can be calculated from its molar mass.
mass of H3PO4 = moles of H3PO4 x molar mass of H3PO4
Mass H3PO4 = 0.3664 mol x 98.0 g/mol
Mass of H3PO4 = 35.92 g
Therefore, the maximum mass of phosphoric acid that can be produced from 26.0 g P4O10 and 14.6 g H2O is 35.9 g H3PO4.
What is stoichiometry in chemistry?
Stoichiometry, in chemistry, the determination of the proportions in which elements or compounds react with each other. The rules followed in determining stoichiometric ratios are based on the law of conservation of mass and energy and the law of combining weight or volume.
Why is it called stoichiometric?
Stoichiometry is the study of quantitative or measurable relationships that exist in chemical formulas and chemical reactions. The term is derived from the Greek stoikeion for element and metron for measurement.
To know more about stoichometry visit:
https://brainly.com/question/30354757
#SPJ1
solid iron iii oxide reacts with carbon monoxide gas to form solid iron and carbon dioxide gas.express your answer as a chemical equation identify all of the phases in your answer!
The balanced chemical equation will be
Fe₂O₃(s) + 3CO(g) ⇒ 2Fe(s) +3CO₂(g)
Chemical formulas and symbols called equations are used to symbolically represent chemical reactions.
A chemical equation consists of reactants, products, and an arrow pointing in the direction of the reaction. When there are the same number of atoms in each molecule on both sides of the equation, the chemical equation is said to be balanced.
Carbon monoxide gas and solid iron (iii) oxide react to produce solid iron and carbon dioxide gas.
Iron (iii) oxide = Fe₂O₃
Carbon monoxide =CO
Iron = Fe
Carbon dioxide =CO₂
The given statement is
Fe₂O₃(s) + CO(g) ⇒ Fe(s) +CO₂(g)
Here, on LHS & on RHS we have the following:
Fe= 2 → 1
C =1 → 1
0 = 4→ 2
The reaction is unbalanced; so, we will balance the chemical equation
Fe₂O₃(s) + 3CO(g) ⇒ 2Fe(s) +3CO₂(g)
For more questions on Chemical Equation
brainly.com/question/26694427
#SPJ4
Which one of the following above is more soluble in water, ethanol (C2H5OH) or CHBr3
Ethanol (C₂H₅OH) is more soluble in water than chlorobromomethane (CHBr₃).
Solubility refers to the ability of a substance to dissolve in a solvent. When a substance dissolves in a solvent, the individual particles of the substance spread evenly throughout the solvent to form a homogeneous solution.
Ethanol is a polar molecule with a hydroxyl (-OH) functional group, which allows it to form hydrogen bonds with water molecules, making it highly soluble in water.
On the other hand, CHBr₃ is a non-polar molecule, and it is not as soluble in water due to the lack of hydrogen bonding between the molecule and water.
In general, polar substances tend to be more soluble in polar solvents like water, while non-polar substances are more soluble in non-polar solvents like ethanol.
The problem seems confusing, it must have been...
"Which one of the following is more soluble in water, ethanol (C₂H₅OH) or CHBr₃?"
Learn more about Solubility here: https://brainly.com/question/24057916
#SPJ4
Amniotic fluid protects the fetus by the following actions: (1) cushioning against impacts to the maternal abdomen, (2) maintaining a stable temperature, and
Amniotic fluid protects the fetus by the following actions:
cushioning against impacts to the maternal abdomen.maintaining a stable temperature.providing a protective barrier against infection.Amniotic fluid is essential for protecting the fetus and providing it with a safe and comfortable environment. It cushions the baby from outside impacts and helps to maintain a stable temperature. Additionally, amniotic fluid helps to protect the baby from infection by acting as a barrier against potentially harmful bacteria and other infectious agents. Finally, amniotic fluid also helps the baby's lungs to develop properly and helps with the development of the baby's skin and muscles.
Learn more about Amniotic fluid :
https://brainly.com/question/28025020
#SPJ4
2. A person who is 1200 mm tall and has a mass of 30 kg would be better suited to
be:
a. a center for the Atlanta Falcons.
b. a little league baseball player.
c. a member of your school's soccer team.
Which of the following statements is (are) true?
Check all that apply.
- Substitutional alloys tend to be more ductile than interstitial alloys.
- Nonmetallic elements are never found in alloys.
- Interstitial alloys tend to form between elements with similar ionic radii.
The following statements is (are) true is substituted alloys tend to be more ductile than interstitial alloys.
Alloy material is a type of material made from a combination of two or more types of substances used for the manufacture of vehicles. Alloys are made by mixing certain materials which will later cool down and harden so that they become an alloy metal. The structure of the alloy consists of two alloys, namely substitutional and interstitial alloys.
Substitution alloys are atoms of alloying substances that are used to replace the main metal of which they are composed. This alloy is formed from non-metallic atoms and is an alloying agent with almost the same size making it more ductile than interstitial alloys. While the interstitial alloy is a substance formed from fewer atoms compared to the main metal. The atoms slip between the constituent metals, for example steel.
Learn more interstitial alloys at:
https://brainly.com/question/15447910
#SPJ4
Give the reaction of carboxylic acid with ammonia
Answer:
Reactions of carboxylic acids with ammonia
It transfers a hydrogen ion to the lone pair on the nitrogen of the ammonia and forms an ammonium ion. If you mix together a solution of ethanoic acid and a solution of ammonia, you will get a colourless solution of ammonium ethanoate
Explanation:
draw a structure for each of the isomers possible for c6h14. give the systematic name of each isomer you have drawn.
Compound with molecular formula [tex]C_{6} H_{12}[/tex] is hexane. It has 5 structural isomers i.e. n - hexane, 2 - methyl pentane, 3 - methyl pentane, 2,2-dimethylbutane, 2,3 - dimethylbutane.
Hexane is an organic compound with the molecular formula C6H14. It is a hydrocarbon composed of 6 carbon atoms linked together in a chain and 14 hydrogen atoms bonded to these carbon atoms. It is a colourless, flammable liquid with a boiling point of approx. 68°C and a density of 0.67 g/cm3.
The first isomer is n-hexane in which all carbon atoms in the chain are connected in a straight line and all hydrogen atoms are bonded to carbon atoms in the chain by paraffin wax.
The second isomer is 2-methylpentane, in which 1 methyl group is attached to the second carbon atom in the chain and all other hydrogens are paraffinically attached.
The third isomer is 3-methylpentane, in which a methyl group is attached to the third carbon atom of the chain and all other hydrogens are paraffinically attached.
The fourth isomer is 2,2-dimethylbutane, in which two methyl groups are attached to the second and third carbon atoms in the chain and all other hydrogens are paraffinic bonded.
The final isomer is 2,3-dimethylbutane, which has two methyl groups attached to the second and third carbon atoms in the chain and all other hydrogens attached to the paraffin.
Hexane is mainly used as solvent in the chemical industry and is also an important additive for gasoline and other fuels. It is also used as starting material in many organic syntheses.
Full question:
Draw a structure for each of the isomers possible for [tex]C_{6} H_{12}[/tex]. Give the systematic name of each isomer you have drawn. Name each one of them by the IUPAC system. Also indicate primary, secondary, tertiary and quaternary carbons in each of them.
To know more about [tex]C_{6} H_{12}[/tex]:
brainly.com/question/29052024
#SPJ4
review the reversible reactions given, along with the associated equilibrium constant k at room temperature. in each case, determine whether the products or reactants are favored.
The reaction conditions are such that the reverse reaction is favored.
equilibrium constant, Ka = 1.8*10^-5
If the value of the equilibrium constant is greater than 1, this indicates that the concentration of the product is higher than that of the reactants, thus promoting forward reaction. An equilibrium constant value of 1 indicates equal product and reactant concentrations. Therefore, neither the forward nor the reverse reaction is favored. If the value of the equilibrium constant is less than 1, this indicates that the reactant concentration is higher than the product concentration. Therefore, the reverse reaction is preferred.
The reaction conditions are therefore such that the reverse reaction is favored.
Learn more about reaction
brainly.com/question/29794138
#SPJ4
BF3(g)+NH3(g)→F3BNH3(g)
For the above reaction, the following data were measured:
Experiment [BF3] (M)
[NH3] (M)
Initial Rate (M/s)
1 0.250 0.250 0.2130
2 0.250 0.125 0.1065
3 0.200 0.100 0.0682
4 0.350 0.100 0.1193
5 0.175 0.100 0.0596
1. What is the value of the rate constant for the reaction?
2. What is the rate when [BF3]=0.160 and [NH3]=0.600?
1. The rate constant is 3.408 /M/s.
2. The rate is 0.324 M/s.
How can the rate constant and rate of the reaction be calculated?Let's say the reaction rate is
rate = k[BF3][x.NH3][y]
where,
In the reaction, BF3 and NH3 are in x and y's order.
When comparing experiments 1 and 2, the concentration of [BF3] is the same, canceling out both experiments, giving us
rate1/rate2 = 0.250/0.125 = (0.250/0.1065 = 0.2130/0.1065 y
assuming a log from both sides,
(1) = y log (2) (2)y = 1
Because of [NH3], the sequence of reaction is 1.
Taking experiments 4 and 5, the NH3 concentration is the same.
The order with respect to [BF3] is 1 because the initial rate of reaction doubles (from 0.0596 to 0.1193) as [BF3 concentration doubles from 0.175 M to 0.350 M.
The total rate is equal to 1 + 1 = 2.
Thus, the reaction rate will be.
rate = k
[BF3][NH3]
where k represents the rate constant.
rate = k
[BF3][NH3]
with k being the rate constant
take experiment 1,
k = 0.2130/(0.250 x 0.250) = 3.408 M-1.s-1
rate when [BF3] = 0.170 M and [NH3] = 0.560 M
rate = 3.408 x 0.170 x 0.560 = 0.324 M.s-1
To know more about rate of reaction, check out:
https://brainly.com/question/24795637
#SPJ1
if the extracellular concentration of sodium is 25 mm, then what is the pna*[na ]out for sodium? refer to the calculations worksheet for lab 2 for the equation and parameters to use for this calculation. round your answer to the nearest thousandths. do not round until you get your final number. do not enter units as part of your answer. enter only a numeric answer.
The Na-k ion exchange pump actively transports 3 intracellular sodium ions for 2 extracellular potassium ions.
Transmembrane proteins called ion exchange pumps and transporters allow ions to move freely across organic membranes in opposition to their concentration gradient. Ion pumps require constant power from ATP hydrolysis as long as exchangers make use of the energy allocated for one ion's aggregation slope.
The water contaminants from the abandoned ancient civilization are eliminated using the ion exchange synthetic method. These ions are replaced with better ones, which degrades the quality of your water. Because two combined orders can remove magnesium and calcium ions from the water, water softeners are quite similar to ion exchange systems. An significant cation in extracellular space is the sodium ion (Na+). Na+ can participate in a distracting intracellular second messenger that controls a variety of natural processes upon initial entry into the container.
Learn more about Extracellular here
https://brainly.com/question/29579488
#SPJ4
Calculate the root mean square (rms) average speed of the atoms in a sample of argon gas at 0.13 atm and -60.
The RMS speed of the atoms in the sample of argon gas at 0.13 atm and -60°C is[tex]533.5 m/s.[/tex]
Root mean square (RMS) average speed is the average speed of the atoms in a sample of gas, calculated by taking the square root of the average of the squares of the individual speeds. To calculate the RMS speed of argon gas at 0.13 atm and -60°C, we first need to calculate the mean kinetic energy (mKE) of the gas. The mKE can be calculated using the formula [tex]mKE = \frac{3}{2}kT[/tex],
where k is Boltzmann's constant ([tex]1.38 * 10^{-23} J/K[/tex]) and T is the temperature of the gas in Kelvin. At -60°C, the temperature is 213.15 K, so the mKE of the gas is [tex]0.845 * 10^{-21} J.[/tex].
The RMS speed of the atoms can then be calculated using the formula [tex]RMS speed = \sqrt{} (2mKE/m)[/tex], where m is the mass of the atom. The mass of an argon atom is[tex]6.63 * 10^{-26} kg[/tex], so the RMS speed of the atoms in the sample of argon gas at 0.13 atm and -60°C is [tex]533.5 m/s.[/tex]
learn more about argon Refer:brainly.com/question/133359
#SPJ4
Draw a diagram showing how the parts of an atom are related
The relationship between the three fundamental parts of an atom is best represented by the diagram: e- (outside), p+, and n0 (nucleus/inside e-).
What is a foundational concept?
the support or basis of something, n. a subterranean support system that evenly distributes the weight of a wall, structure, etc. 3 the basis upon which something is built. establishing, the act of establishing, the state of being established, or even the state of establishing.
An exact definition of a fundamental skill
It discusses the foundational skills of literacy, numeracy, and transferable skills, which form the basis for a lifetime of learning. Just as we wouldn't build a house without solid foundations, we cannot expect a child to develop without strong fundamental skills.
To know more about foundational visit:
brainly.com/question/17853727
#SPJ1
Based on the data gathered in Millikan's oil-drop experiments, the concept of atomic structure was modified. Which of the following aspects of the structure of the atom was validated by these experiments?
Check all that apply.
- mass of an electron
- mass of the atom
- charge on a proton- charge on an electron
- mass of a proton
Correct options are option (a) and option (d) are correct. Mass of an electron and charge of an electron was validated by the Millikan's oil drop experiments.
The oil drop experiment was proposed by Robert Millikan. This oil drop experiment allowed Millikan to determine the charge on the electron. This experiment is known as Millikan's oil drop experiment. Later on he used the data and information from his oil drop experiment to determine the mass of the electron. Millikan determined the charge of an electron to be 1.5924×10−19C, where C stands for coulomb which is one ampere*second. At first he direct and compel the measurement of the electric charge of a single electron. He defined the force on any electric charge in an electric field is equal to the product of the charge and the electric field.
To Learn more about Millikan's oil drop experiment please visit:
https://brainly.com/question/2166285
#SPJ4
The correct question is,
Based on the data gathered in Millikan's oil-drop experiments, the concept of atomic structure was modified. Which of the following aspects of the structure of the atom was validated by these experiments?
Check all that apply.
(a) mass of an electron
(b) mass of the atom
(c) charge on a proton
(d) charge on an electron
(e) mass of a proton
2 NH3 + 3 CuO → 3 Cu + N2 + 3 H2OIn the above equation, how many grams of N2 can be made when 15 moles of CuO are consumed?Round your answer to the nearest tenth. If you answer is a whole number like 4, report the answer as 4.0
The balanced chemical equation is:
2 NH3 + 3 CuO → 3 Cu + N2 + 3 H2O
140.1 grams of N2 can be made when 15 moles of CuO are consumed.
The balanced chemical equation is:
2 NH3 + 3 CuO → 3 Cu + N2 + 3 H2O
According to the equation, 2 moles of NH3 react with 3 moles of CuO to produce 1 mole of N2.
Number of moles of N2 = (15 moles of CuO) x (1 mole of N2 / 3 moles of CuO) = 5 moles of N2
we need to use the molar mass of N2, which is approximately 28.02 g/mol. Therefore:
Mass of N2 = (5 moles of N2) x (28.02 g/mol) = 140.1 g
Rounding this to the nearest tenth gives us 140.1 g of N2.
Learn more about molar mass here:
https://brainly.com/question/22997914
#SPJ4
Determine the oxidation number of each element in these species: permanganate ion Mn O calcium phosphide Ca P?
The oxidation number of each element in these species are
Oxidation number Mn is +7, Oxidation number O is -2 Oxidation number Ca is +2Oxidation number P is -3The total number of electrons that an atom acquires or loses to establish a chemical bond with another atom is known as the oxidation number, also known as the oxidation state.
Each constituent element in a compound has the following oxidation number:
Mn in MnO4⁻MnO4 =-1
Where; O = -2, Mn = x
MnO4 =-1
x -2(4) = -1
x - 8 = -1
x - 7 = 0
x = +7
Ca₃P₂Ca₃P₂ = 0
Where; Ca =+2, P = x
Ca₃P₂ = 0
+2(3) + 2P = 0
+6 + 2P = 0
P = -3
Learn more about oxidation number at https://brainly.com/question/20629406
#SPJ4
Look at the picture below
As pressure increases then volume decreases and vice versa, because pressure and volume are inversely proportional to each other.
What do you mean by the Boyle's law ?Boyle's Law states that as the pressure on a gas increases, the volume of the gas decreases because the gas particles are forced closer put together. Oppositely, as the pressure of a gas decreases, the gas volume increases because the gas particles can away from each other.
According to the Boyle's law when you inhale, muscles increase the size of your thoracic that is chest cavity and expand your lungs.
Thus, As pressure increases then volume decreases and vice versa, because pressure and volume are inversely proportional to each other.
To learn more about the Boyle's law, follow the link;
https://brainly.com/question/30367133
#SPJ1