The equation for the temperature change of the solution when 15 ml of 0.01 M HCl is mixed with ml of 0.01 M NaOH is:
HCl + NaOH → NaCl + H2O
ΔT = (nHCl x ΔHCl) + (nNaOH x ΔNaOH)Where nHCl is the amount of moles of HCl and ΔHCl is the molar heat of reaction of HCl, and nNaOH is the amount of moles of NaOH and ΔNaOH is the molar heat of reaction of NaOH.
The temperature change of a solution is determined by the amount of heat energy it absorbs or releases during a reaction. For example, when a solute dissolves in a solvent, it can cause the temperature of the solution to rise or fall.
This is because the solute absorbs or releases heat energy in order to break the intermolecular forces between the solvent molecules and the solute molecules. Additionally, when two solutions are mixed, their temperatures may change due to endothermic or exothermic reactions.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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:
A car traveling along the highway brakes to stop over a certain distance. More braking force is required if the car hasA. less stopping distanceB. more massC. more momentumD. all of the above
Braking power is required to stop at a certain distance which is greater if the car has D. all of the above
What are car brakes?Car brakes are components of the vehicle engine that play a role in regulating the speed of the vehicle. Brakes are often considered part of a vehicle's safety features.
Brake components can function properly because each component in them is interrelated and works together.
If a car traveling along a road brakes to stop a certain distance, it requires more braking force if the car has a shorter stopping distance, has more mass, and has more momentum.
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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]
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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.
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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
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
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what do the Irish traditionally treat fevers?
the Irish traditionally believe in treating fevers with what on dry sugar?
Answer: Spirit
Explanation:
i looked it up and there was a quizlet that asked the same question.
A nonapeptide was determined to have the following amino acid composition: (Arg)2, (Gly)2, (Phe)2, His, Leu, Met. 1-fluoro-2,4-dinitrobenzene (FDNB) reacts with free amino (but not amido or guanidino) groups in proteins to produce dinitrophenyl (DNP) derivatives of amino acids. The native peptide was incubated with 1-fluoro-2,4-dinitrobenzene (FDNB) and then completely hydrolyzed; 2,4-dinitrophenylhistidine was identified by HPLC. What does this tell you about the peptide sequence? When the native peptide was exposed to cyanogen bromide (CNBr), an octapeptide and free glycine were recovered. What does this tell you about the peptide sequence? Incubation of the native peptide with trypsin gave a pentapeptide, a tripeptide, and free Arg.The peptides were separated and treated with FDNB. 2,4-Dinitrophenyl-histidine was recovered from the pentapeptide, and 2,4-dinitrophenylphenylalanine was recovered from the tripeptide.What does this tell you about the peptide sequence? Digestion with the enzyme pepsin produced a dipeptide, a tripeptide, and a tetrapeptide. The tetrapeptide was composed of (Arg) 2, Phe, and Gly. What does this tell you about the peptide sequence? What is the sequence of the nonapeptide?
The information provided tells us that the peptide sequence contains a histidine residue at some position.
This information indicates that the peptide sequence contains a histidine residue, which is covalently modified by FDNB to form 2,4-dinitrophenylhistidine. The fact that the histidine residue is modified by FDNB suggests that it is in the free amino form, rather than being part of an amide or guanidino group.
This is because FDNB reacts with free amino groups, but not with amido or guanidino groups. The presence of a histidine residue in the peptide sequence can provide information about the functional and structural properties of the peptide, as histidine is known to play important roles in protein structure and function.
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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.
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What is the energy; in J, of light that must be absorbed by a hydrogen atom to transition an electron from n = 3ton = 7?
A hydrogen atom must absorb 1.815x10⁻¹⁹ Joules of energy in order to transfer electrons from n=3 to n=6.
Let,
Energy absorbed by photon=13.6 z²(1/n₁²-1/n₂²)
E₃₋₆=13.6×1²(1/3²-1/6²)
=(13.6×3/36)ev
E₃₋₆=1.133 eV
to convert energy into J from eV,
E₃₋₆=1.133 eV× 1.602×10⁻¹⁹
E₃₋₆=1.815x10⁻¹⁹ Joules
Electrons are subatomic particles that have a negative electric charge. They are one of the building blocks of matter and are found in the shells that orbit the nucleus of an atom. Electrons play a crucial role in many physical and chemical processes, such as electricity, magnetism, and chemical bonding. They are incredibly tiny, with a mass of about 9.11 x 10⁻³¹ kg and a size of about 10⁻¹⁸ meters. They are also incredibly fast, moving at speeds close to the speed of light. Electrons can be found in a variety of environments, from the atoms that make up the world around us to the free electrons in metals that allow for the flow of electricity.
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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.
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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.
why did you choose table salt is the best substance
Table salt is sodium chloride, which gives taste to food items and is easily available in its pure form. It can be easily purified and it is readily soluble in water.
What is table salt ?The chemical compound sodium chloride is used as table salt in food. The formula of sodium chloride is NaCl. It is formed by the ionic bonding between sodium and chlorine.
Sodium metal donates one electron to the electronegative chlorine atom and the electrostatic attraction between positive and negative ions create the ionic bond.
NaCl is easily soluble in water. It can be easily purified using phase separation and distillation methods. NaCl is mostly available from the sea in abundant quantity.
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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.
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1.SEP Communicate Information In addition
to properties of elements, list at least two other
things or events that are periodic.
Other happenings that are also in periods would be: tides and biological rhythms.
What events are in periods?There are many things and events that exhibit periodicity, or a repeating pattern over time. Some examples include:
Tides: The rise and fall of sea levels due to the gravitational pull of the moon and the sun on Earth's oceans. Tides follow a predictable pattern and repeat every 12 hours and 25 minutes.
Biological Rhythms: Many living organisms have internal biological clocks that regulate various physiological processes such as sleep, hunger, and hormone secretion. These rhythms repeat in a periodic manner, such as the 24-
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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
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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.
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A solution is prepared by mixing 1.28 mol C7H16, 2.92 mol C8H18, and 2.64 mol C9H20. What is the (a) mole fraction and (b) mole percent of each component of the solution?
Mole fraction is indeed a unitless phrase since it represents a ratio. Therefore, 0.18 is the mole fraction of C[tex]_7[/tex]H[tex]_{16}[/tex].
What is mole fraction?Mole fraction is a concentration unit defined as the amount of moles of a constituent divided by the total amount of moles of a solution. Mole fraction is indeed a unitless phrase since it represents a ratio.
When the mole fractions of all constituents of a solution are put together, the result is 1. The molar ratio of acetone in a solution containing 1 mol toluene, 2 mol tetrachloroethylene, as well as 7 mol acetone is 0.7.
mole fraction of C[tex]_7[/tex]H[tex]_{16}[/tex] = 1.28/ (1.28+ 2.92+ 2.64)= 1.28/ 6.84=0.18
mole fraction of C[tex]_8[/tex]H[tex]_{18}[/tex]=2.92/ (1.28+ 2.92+ 2.64)=2.92/6.84=0.42
mole fraction of C[tex]_9[/tex]H[tex]_{20}[/tex]= 2.64/ (1.28+ 2.92+ 2.64)=2.64/ 6.84 = 0.38
Therefore, 0.18 is the mole fraction of C[tex]_7[/tex]H[tex]_{16}[/tex].
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Which choice identifies the limiting reactant
and correct reasoning?
4A1+302 → 2Al2O3
AI —> initial mass 162
—> theoretical yield Al2O3 306
0₂ —> initial mass 97
—> theoretical yield Al2O3 206
A. O2 because it produces a lower theoretical yield.
B. Al because it produces a larger theoretical yield.
C. O2 because it starts with a lower mass.
D. Al because it has a higher initial mass.
The limiting reactant is O2 because it produces a lower theoretical yield. Option A.
Limiting reactantTo identify the limiting reactant, we need to compare the amount of product that can be produced from each reactant, based on the balanced chemical equation and the amount of each reactant that is available.
Using the given information, we can calculate the amount of product that can be produced from each reactant:
For Al:
The molar ratio of Al to Al2O3 is 4:2, or 2:1.
The number of moles of Al is: 162 g / 26.98 g/mol = 6.00 mol.
The theoretical yield of Al2O3 from Al is: 6.00 mol Al x (2 mol Al2O3 / 2 mol Al) x (101.96 g Al2O3 / 1 mol Al2O3) = 611 g Al2O3.
For O2:
The molar ratio of O2 to Al2O3 is 3:2.
The number of moles of O2 is: 97 g / 32.00 g/mol = 3.03 mol.
The theoretical yield of Al2O3 from O2 is: 3.03 mol O2 x (2 mol Al2O3 / 3 mol O2) x (101.96 g Al2O3 / 1 mol Al2O3) = 205 g Al2O3.
Comparing the theoretical yields of Al2O3 from Al and O2, we can see that the theoretical yield of Al2O3 from Al (611 g) is greater than the theoretical yield of Al2O3 from O2 (205 g). Therefore, the limiting reactant is O2, since it will be completely consumed before all of the Al is used up.
The correct answer is A. O2 because it produces a lower theoretical yield.
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Which one of the following cannot form a solid with a lattice based on the sodium chloride structure? A) NaBr. B) LiF. C) RbI. D) CuO. E) CuCl2.
The cannot form a solid with a lattice based on the sodium chloride structure is E) CuCl2
Since, NaCl is a linear molecule and it contain only two ions. In the given options, NaBr, LiF, RbIl and CuO all are linear molecules and it contain only two ions. So, NaBr, LiF, Rbl and CuO will form similar lattice to the NaCl. On the other hand in case of CuCl, there are total three ions and it is not linear molecule. So, it will form different lattice but not NaCl based lattice. The crystal lattice of NaCl is face -centered cubic. Sodium Chloride is an alkali halide with an fcc crystal structure. The basis is two ions, a sodium cation and a chlorine anion.
Then the correct option will be (E) CuCl2.
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Determine if each statement is True or False and put True or False in the blank. A-COOH group is considered an alcohol and a ketone as well as a carboxylic acid. Alcohols, ethers, and esters all contain O atoms. Amides contain a CEO and a C-N on the same carbon. Esters, amides, carboxylic acids and nitriles all contain C=O groups. Alkenes, alkynes, and aromatics are all types of hydrocarbons. Alkanes typically have the formula CnH2n.
A). The statement is False.
B). The statement is True.
C). The statement is True.
D). The statement is False.
E). The statement is True.
F). The statement is False.
In organic chemistry, a hydrocarbon is an organic compound consisting entirely of hydrogen and carbon.: 620 Hydrocarbons are examples of organization 14 hydrides. Hydrocarbons are normally colorless and hydrophobic; their smell is typically faint and may be much like that of gasoline or lighter fluid. They occur in a various variety of molecular structures and stages: they may be gases (such as methane and propane), liquids (including hexane and benzene), low melting solids (such as paraffin wax and naphthalene), or polymers (which include polyethylene and polystyrene).
within the fossil gas industries, hydrocarbon refers to evidently taking place petroleum, herbal gas, and coal, or their hydrocarbon derivatives and purified paperwork. The combustion of hydrocarbons is the principal source of the world's energy. Petroleum is the dominant raw-material source for natural commodity chemical compounds such as solvents and polymers. maximum anthropogenic (human-generated) emissions of greenhouse gases are both carbon dioxide released with the aid of the burning of fossil fuels, or methane launched from the coping with natural gas or from agriculture.
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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.
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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.
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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.
How many grams do 2.354E+25 molecules of chromium 2 permanganate weigh?
Chromium 2 permanganate weighs 1117.12 grams or 2.354E+25 molecules.
Why does the body need chromium?Increasing glucose tolerance and enhancing protein, glycogen, and lipid metabolism are two benefits of the crucial trace mineral chromium. People only require very little amounts of this metal coating.
Molar mass of chromium(II) permanganate = (1 x atomic mass of Cr) + (2 x atomic mass of Mn) + (8 x atomic mass of O)
Let's assume the atomic mass of Cr is 52, atomic mass of Mn is 54, and atomic mass of O is 16.
Molar mass of chromium(II) permanganate = (1 x 52) + (2 x 54) + (8 x 16) = 52 + 108 + 128 = 288 g/mol
Moles of chromium(II) permanganate = 2.354 x 10^25 molecules / 6.022 x 10^23 molecules/mol = 3.9 x 10^2 mol
Weight in grams = moles of chromium(II) permanganate x molar mass = 3.9 x 10^2 mol x 288 g/mol = 1117.12 g
So, 2.354 x 10^25 molecules of chromium(II) permanganate weigh approximately 1117.12 grams.
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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.