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.
global warming is causing atmospheric co2 levels to increase, which is expected to cause ocean acidification. which of the following is not a consequence of increased atmospheric co2 levels?
Increase in the concentration of hydrogen ions in the oceans is NOT a consequence of increased atmospheric CO₂ levels. Option E is correct.
The main consequence of increased atmospheric CO₂ levels is ocean acidification, which is characterized by a decrease in the pH of seawater caused by an increase in the concentration of hydrogen ions in the oceans. This is caused by the reaction of carbon dioxide with seawater to form carbonic acid, which then breaks down into hydrogen ions and bicarbonate ions.
The decrease in pH can have significant impacts on marine organisms, including changes in the availability of important nutrients, altered behavior, and reduced growth and survival rates.
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--The given question is incomplete, the complete question is
"Global warming is causing atmospheric CO₂ levels to increase, which is expected to cause ocean acidification Which of the following is NOT a consequence of increased atmospheric CO₂ levels? A) decrease in the concentration of bicarbonate ions in the oceans B) increase in the amount of carbonic acid formed in the oceans C) decrease in the amount of calcium carbonate produced in the oceans D) decrease in the concentration of carbonate ions in the oceans E) increase in the concentration of hydrogen ions in the oceans"--
water molecules are involved in building and breaking down large polymers. which statements correctly describe water in these processes?
In polymerization reactions, water molecules are involved in both hydration and dehydration process.
What are polymerization reactions?The reactions in which large number of monomer molecules react to form polymer are called polymerization reactions.The large molecules which are produced from polymerization may have linear or branched structure.
They can also form a complex three dimensional structure . There are different polymerization reactions like step-growth polymerization, chain -growth polymerization and condensation polymerization.
Polymers containing same kind of monomer are homopolymer and which contain different monomers are heteropolymers. Mechanisms which describe formation of polymers are of different types such as free radical mechanism and chain growth mechanisms.
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Name the organic product of the following reaction
The product of the reaction is 1-chloro -5 -methyl hexan -2- ol
What is carbonyl reduction?Carbonyl reduction is a chemical reaction in which a carbonyl group (C=O) is reduced, resulting in the formation of a primary or secondary alcohol.
Carbonyl reduction reactions typically involve the transfer of electrons from a reducing agent, such as a metal catalyst or a hydrogen-donating reagent, to the carbonyl group, breaking the carbon-oxygen double bond and forming a single bond between carbon and oxygen.
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a bernoulli process consists of a series of n independent and identical trials of an experiment such that on each trial: (choose all that apply!)
A bernoulli process consists of a series of n independent and identical trials of an experiment such that on each trial: (choose all that apply!) is that there are two outcomes with a probability of success or failure.
The binomial distribution is one of the distributions with discrete random variables which is a study of inferential statistics. This distribution is used to calculate the probability of an experiment, and this distribution is often referred to as the Bernoulli experiment.
The Bernoulli distribution is a distribution derived from the Bernoulli experiment. The Bernoulli experiment is an experiment that produces two possible outcomes: Success and Failure. In addition, this experiment has other characteristics, namely the sequence of these experiments is an independent event. An example of this experiment is when tossing a coin that only has two outcomes, namely a picture or a number. Then the probability of our guess succeeds or fails.
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Robert was able to travel 230.0 miles in 4.000 hours and used 40 liters of gasoline. What was Robert's speed in feet per second?
The term mile is a unit of the distance which is approximately equals to 1.6 km or 1760 yards. Here the Robert's speed in feet per second is 84.33.
What is speed?Speed is defined as the rate of change of position of a body in any direction. It can also be defined as the ratio of the distance to the speed of an object. Speed is a scalar quantity as it has no magnitude only direction.
The SI unit of speed is m/s. The equation which is used to calculate the speed is:
Speed = Distance / Time
1 mile = 5280 feet 1 hour = 3600 s.
So 230.0 miles = 1214,400 feet
4 hour = 14, 400 s
Then the speed is:
Speed = 1214,400 / 14, 400 = 84.33 feet per second.
Thus the Robert's speed in feet per second is 84.33.
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A generic element, M, has two isotopes, 11M and 13M, and an average atomic mass of 11.66 amu. The natural abundances of the two isotopes are 65% 11M and 35% 13M. The isotopic mass of 11M is 11.01 amu. What is the isotopic mass of 13M?
12.01 amu
11.43 amu
11.24 amu
12.87 amu
The average atomic mass of an element is calculated as the weighted average of the masses of its isotopes, taking into account their natural abundances.
Given the average atomic mass of 11.66 amu and the natural abundance of 65% for 11M, we can calculate the contribution of 11M to the average atomic mass as follows:
11.01 amu * 0.65 = 7.165 amu
Next, we can subtract this contribution from the average atomic mass to find the contribution of 13M:
11.66 amu - 7.165 amu = 4.495 amu
Finally, we can divide this contribution by the natural abundance of 13M (0.35) to find the isotopic mass of 13M:
4.495 amu / 0.35 = 12.87 amu
So the isotopic mass of 13M is approximately 12.87 amu.
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A 155- g sample of steam at 100 ∘C is emitted from a volcano. It condenses, cools, and falls as snow at 0 ∘C . (For water, 80. cal (334 J ) is needed to melt 1 g of ice or must be removed to freeze 1 g of water and 540 cal (2260 J ) is needed to convert 1 g of water to vapor at 100 ∘C .)
Part A
How many kilojoules of heat were released?
442,823 J has been removed from the water.
What is Kilojoules?An energy unit is called a kilojoule (or calorie). In Australia, we measure how much energy someone gets from eating or drinking in kilojoules (kJ).
The quantity of carbohydrates, lipids, and proteins as well as the portion size affect the kilojoule content of foods. The foods with the most kilojoules are those that are heavy in fat, added sugar, or alcohol.
Low-kilojoule foods include fruits, vegetables, and legumes. By reading the label, you may determine how many kilojoules are in packaged items.
Therefore, 442,823 J has been removed from the water.
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what are the main characteristics of aromatic compound
caffeine & moth balls & dyes are examples
chlorine gas to disinfect water
have carbon atoms in ring shape
smell good
not very reactive
they float
hard to melt
Aromatic compounds are organic compounds that contain a specific type of ring structure called an aromatic ring.
Aromatic rings are made up of carbon atoms that are connected in a ring shape and have alternating double and single bonds.
Aromatic compounds are often highly stable and do not easily react with other compounds.
Aromatic compounds often have strong, pleasant odors, but not all compounds with strong odors are necessarily aromatic.
Aromatic compounds can be found in a variety of natural sources, such as plants and flowers, and are also used in many commercial products such as perfumes, dyes, and medicines.
Aromatic compounds have unique physical and chemical properties, including high melting and boiling points, low solubility in water, and the ability to undergo substitution reactions.
Benzene: Benzene is a highly important aromatic compound that is used in the production of many industrial and consumer products, such as plastics, rubber, resins, dyes, detergents, and pharmaceuticals.
Toluene: Toluene is an aromatic compound that is commonly used as a solvent in the production of many industrial products, including paint, adhesives, and rubber.
Naphthalene: Naphthalene is an aromatic compound that is commonly used as a moth repellent and also as a starting material for the production of other chemicals.
Anthracene: Anthracene is an aromatic compound that is commonly used as a starting material for the production of dyes, such as indigo, and in the production of certain types of plastics.
Salicylic acid: Salicylic acid is an aromatic compound that is used in the production of various medicines, including aspirin, and is also used in some skin-care products.
Caffeine: Caffeine is an aromatic compound that is found in coffee, tea, and other drinks and is a stimulant that can help to increase alertness and concentration.
ChatGPT
1) A certain mass of nitrogen gas occupies a volume of 6.41 L at a pressure of 4.94 atm. At what pressure will the volume of this sample be 8.79 L? Assume constant temperature and ideal behavior.
2) If an ideal gas has a pressure of 6.83 atm, a temperature of 475 K, and a volume of 60.47 L, how many moles of gas are in the sample?
Calculate the following quantity: volume in liters of 0.143 M manganese(II) sulfate that contains 73.0 g of solute. round your answer to significant figures.
The volume can be calculated using the molarity and the number of moles of solute: 0.143 M = moles of solute/volume (in liters)
To find the number of moles of solute, we use the formula weight of manganese(II) sulfate: moles of solute = mass of solute/formula weight
The formula weight of manganese(II) sulfate is found by adding the atomic weights of manganese (54.938 g/mol), sulfur (32.066 g/mol), and oxygen (16.00 g/mol): formula weight = 54.938 + 32.066 + (4 x 16.00) = 247.0 g/mol. So, moles of solute = 73.0 g / 247.0 g/mol = 0.296 mol. Finally, we can find the volume: volume = moles of solute / molarity = 0.296 mol / 0.143 mol/L = 2.06 L
Rounding to two significant figures, the volume of 0.143 M manganese(II) sulfate that contains 73.0 g of solute is 2.1 L.
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When an alarm sounds in the laboratory, it is important to respond _______ and remain ______. Listen for any other instructions, turn off any _______ in use, and be prepared to leave immediately.
1) calmly
2) quiet
3) equipment
When an alarm sounds in the laboratory, it is important to respond quickly and remain calm. Listen for any other instructions, turn off any equipment in use, and be prepared to leave immediately.
What is laboratory?
Laboratory is a place where scientific experiments and measurements are performed. It is equipped with various types of equipment and instruments to carry out experiments and tests. Laboratories are usually used by scientists and technicians to conduct experiments, analyze samples, and conduct research. It is an area that is designed to be kept clean and organized in order to ensure safety and accuracy when conducting experiments. Laboratories can be found in many different settings such as hospitals, universities, research and development centers, and manufacturing facilities.
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Which of the following is an intermolecular force exhibited in a solution of CH3OCH3 in CH3OH? Select all that apply.Multiple select question.Hydrogen bondingDispersion forcesDipole-dipole forcesIon-Dipole
The following intermolecular forces are exhibited in a solution of CH3OCH3 (dimethyl ether) in CH3OH (methanol):
Hydrogen bondingDipole-dipole forcesBoth dimethyl ether (CH3OCH3) and methanol (CH3OH) contain polar functional groups (-OH and -O-) and exhibit hydrogen bonding and dipole-dipole forces in solution.
Dispersion forces are present in all substances, but they are relatively weak compared to hydrogen bonding and dipole-dipole forces in this particular system.
Ion-dipole forces are not applicable in this system as both dimethyl ether and methanol are neutral molecules and do not form ions.
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Complete each of the statements regarding amino acids. Select the amino acid that fits best in each category. 1. An example of a basic amino acid is 2. An example of an acidic amino acid is 3. An example of a neutral polar amino acid is 4. An example of a hydrophobic amino acid is
An example of a basic amino acid is Lysine. An example of an acidic amino acid is Glutamic acid. An example of a neutral polar amino acid is Asparagine. An example of a hydrophobic amino acid is Glycine.
Organic substances known as amino acids have both amino and carboxylic acid functional groups. Alpha-amino acids, which make up proteins, are by far the most significant of the hundreds of amino acids found in nature. In the genetic code, only 22 alpha amino acids are present.
Body protein as well as other vital nitrogen-containing substances including creatine, peptide hormones, and some neurotransmitters cannot be produced without amino acids. Despite the fact that allowances are represented as proteins, amino acids are a biological necessity.
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the following schematic drawing shows two integrin molecules. which one (a or b) is under the active configuration? which side of the plasma membrane (1 or 2) represents cytoplasm?
Cytoplasm is the liquid contained in the cell besides the nucleoplasm which is composed of liquid or cytosol and solids or organelles.
The cytoplasm has a function as a place to store chemicals that are important for use in cell metabolism processes such as enzymes, sugars, fats, ions, and proteins.
Cytoplasm or also known as cell plasma is a liquid that is colloidal, homogeneous, and clear surrounded by a plasma membrane.
In the cytoplasm there are also various chemical compounds needed for cell activity. These compounds are organic compounds and inorganic compounds.
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For a certain ideal gas, the temperature is
increased from 200 K to 602 K allowing pres-
sure, which is initially 1 atm, to vary while
the volume and number of moles of gas are
held constant. What is the new pressure?
Answer in units of atm.
Answer: The new pressure is 3.01 atm
Explanation:
Lets used the ideal gas formula: PV = nRT
P = pressure, V = volume, n = moles, R = universal gas constant, T = temperature (in kelvin)
In this problem we are given that the change in temperature and we need to find the new pressure, when the initial pressure is 1 atm. All other variables are constant.
We can rewrite the ideal gas formula to suite this problem by saying that
P1/T1 = P2/T2
Now lets set up the equation to solve for P2
[tex]P_{2} = \frac{P_{1} * T_{2} }{T_{1} }[/tex]
Now lets plug in the values.
P1 represents the initial pressure: 1 atm
T1 represent the inital temperature: 200k
T2 represents the final temperature: 602k
We are solving for the P2, the final (new) temperature.
[tex]P_{2} = \frac{1atm* 602K }{200k }\\\\P_{2} = 3.01atm[/tex]
Consider an ionic compound, MX3 , composed of generic metal M and generic gaseous halogen X.
The enthalpy of formation of MX3 is Δ∘f=−989 kJ/mol.
The enthalpy of sublimation of M is Δsub=129 kJ/mol.
The first, second, and third ionization energies of M are IE1=647 kJ/mol, IE2=1627 kJ/mol, and IE3=2569 kJ/mol .
The electron affinity of X is ΔEA=−369 kJ/mol . (Refer to the hint).
The bond energy of X2 is BE=153 kJ/mol.
Determine the lattice energy of MX3.
The lattice energy of the compound is -5745 kJ/mol.
What is the lattice energy?
We know that the lattice energy is the energy that is given out when a crystal lattice is formed. We obtain the energy by the use of the Hess law which would have to involve the heat that was evolved or absorbed in the process.
Lattice energy = (−989) - (129) - (153) - [(647 + 1627 + 2569)] - (−369)
Lattice energy = -5745 kJ/mol
Hence the lattice energy of the unknown compound MX3 given the data that has been provided is obtained as -5745 kJ/mol.
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For the following pair of compounds, pick the one with the higher vapor pressure at a given temperature Match the words in the left column to the appropriate blanks in the sentences on the right. Make certain each sentence is complete before submitting your answer. Reset Help 1. For the pair of compounds CH3 CH2CH2 OH or CH3 OH the one with the higher vapor pressure at a given temperature is CH3 CH2 CH2OH H2CO CH4 CH3 Cl 2. For the pair of compounds CH4 or CH3 Cl the one with the higher vapor pressure at a given temperature is 3. For the pair of compounds CH3 OH or H2 CO the one with the higher vapor pressure at a given temperature is
For the pair of compounds CH₃CH₂CH₂OH or CH₃OH, the one with the higher vapor pressure at a given temperature is CH₃CH₂CH₂OH.
For the pair of compounds CH₄ or CH₃Cl, the one with the higher vapor pressure at a given temperature is CH₄. For the pair of compounds CH₃OH or H₂CO, the one with the higher vapor pressure at a given temperature is CH₃OH.
CH₃CH₂CH₂OH has a higher vapor pressure at a given temperature than CH₃OH because it has a higher molecular weight and a higher molecular surface area. This means that more molecules of the compound will be in the gas phase at the same temperature and pressure, resulting in a higher vapor pressure.
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a gas in a piston-cylinder assembly undergoes a compression process for which the relation between pressure and volume is given by PV^n=constant. The initial volume is 0.1(m^3), the final volume is (0.04m^3), and the final pressure is 2 bar. Determine the initial pressure, in bar, and the work for the process, in kJ, if (a) n = 0, (b) n =1, (c) n = 1.3. Be Sure to plot each process on a PV diagram.
The work for the process, in kJ, if
(a) n = 0, is 12kJ
(b) n = 1, is -7.33kJ
(c) n = 1.3, is 6.41kJ
What is isothermal ?Isothermal is a term used to describe a process or system that is maintaining a constant temperature. For example, an isothermal process can occur when two bodies are in thermal equilibrium, meaning they are at the same temperature and heat is not exchanged between them. In a system, isothermal can refer to when the temperature of the system remains constant, even when energy is added or removed from it. This is typically achieved by using a heat exchanger to transfer energy from the system to a heat bath at a constant temperature.
when n=0 , putting n=0 in equation 1 we get
P1 = P2
thereforeP1 = 2 bar
Workdone can be obtained by putting values in equation 2
Workdone,
[tex]\text W = \dfrac{200000 \times 0.04 - 200000 \times 0.1}{1-0}[/tex]
therefore Workdone = - 12000 J = 12kJ
2) when n=1 , putting n=1 in equation 1 we get
P1 V1 = P2 V2
thereforeP1 = 80000 pascal
Workdone can be obtained by putting values in equation 3
Workdone,
[tex]\text W = 80000 \times 0.1ln\left(\dfrac{0.04}{0.1} \right)[/tex]
Therefore Workdone = -7330 J = -7.33kJ
3) when n=1.3 , putting n=1.3 in equation 1 we get
P1 V11.3 = P2 V21.3
ThereforeP1 = 60772.623 pa
Workdone can be obtained by putting values in equation 2
Workdone,
[tex]$ \text W= \frac{200000 \times 0.04 -60772.62 \times 0.1}{1 - 1.3}[/tex]
therefore Workdone = - 6409.12 J = 6.41kJ
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1) Consider the following reaction and associated equilibrium constant:aA(g)⇌bB(g), Kc = 2.7Part AFind the equilibrium concentrations of A and B for a=1 and b=1. Assume that the initial concentration of A is 1.0 M and that no B is present at the beginning of the reaction.
The equilibrium concentration of A is 1.0 M, and the equilibrium concentration of B is 2.7/1.0 = 2.7 M.
To find the equilibrium concentrations of A and B for a=1 and b=1, we need to use the equilibrium expression for the reaction and the given equilibrium constant. The equilibrium expression is as follows:
[tex][A]^a x [B]^b = Kc[/tex]
Plugging in the given values of a and b, we get:
[A] x [B] = 2.7
Since we know the initial concentration of A is 1.0 M and there is no B initially, the equilibrium concentration of A is 1.0 M, and the equilibrium concentration of B is 2.7/1.0 = 2.7 M.
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Fuels react with oxygen to produce carbon dioxide.The reaction of a fuel with oxygen can produce a different oxide of carbon. Name this different oxide of carbon and explain why it is produced'
The specific fuel is not shown here but the combustion of fuels produce carbon dioxide and water.
How do fuels burn?Fuels burn by undergoing a chemical reaction known as combustion, which releases energy in the form of heat and light. The basic process of combustion involves three components: fuel, oxygen, and an ignition source.
Fuels burn by undergoing a chemical reaction with oxygen, releasing energy in the form of heat and light. The process of combustion is a crucial source of energy for many applications, from heating and lighting homes to powering vehicles and generating electricity.
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solid iron(iii) oxide reacts with hydrogen gas to form solid iron and liquid water. write the balanced chemical equation for the reaction described. phases are optional.
The balanced chemical equation for the reaction between solid iron(III) oxide and hydrogen gas to form solid iron and liquid water is:
Fe₂O₃ + 3H₂ -> 2Fe + 3H₂O
A balanced chemical equation is a representation of a chemical reaction that shows the exact number of atoms of each element involved in the reaction.
In a balanced chemical equation, the number of atoms of each element on the reactant side of the equation must be equal to the number of atoms of each element on the product side of the equation.
Fe₂O₃ + 3H₂ -> 2Fe + 3H₂O
In this equation, the iron(III) oxide (Fe₂O₃) reacts with hydrogen gas (H₂) to produce solid iron (Fe) and liquid water (H₂O). The coefficients in the equation ensure that there are the same number of atoms of each element on both sides of the equation, making it a balanced chemical equation.
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What is the mass in grams of 13.26 mL of acetone?
The density of acetone is 0.79 g/ml. Therefore, the mass of acetone for 13.26 ml is the product of its volume and density that is, 10.47 g.
What is density ?Density of substance is the measure of its mass per unit volume. It describes how closely its particles are packed. Density depends on the bond type, temperature and pressure.
Volume of the object is the space occupied by its particles. Volume can be expressed in L, ml, cm³, dm³ etc. Only solids and liquids has a definite volume and the volume of gases is that of the container.
Give that, volume of the object = 825 cm³
density = 13.6 g/cm³
Mass = volume × density
m = 13.26 ml × 0.79 g/ml = 10.47 g
Therefore, the mass of acetone is 10.47 g.
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Please help me. I don’t know where to start
When two hydrogen atoms come together, it is created. The bond is shown as a solid line or as a pair of "dots." Each hydrogen atom gains an electron configuration like that of helium.
Why does an H2 molecule consist of 2 H atoms?Two hydrogen atoms, each with one electron in a 1 s orbital, combine to form a hydrogen molecule. The covalent bond's identical electron pair attracts the two hydrogen atoms.
What is the H2 thermochemical formula?H22H;H=432. 0 kJ is the thermochemical formula for the breakdown of hydrogen gas into atoms. What is the ratio of the energy produced when hydrogen atoms burn in steam compared to when hydrogen molecules of the same mass burn in steam?
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Two alpha particles (helium nuclei), each consisting of two protons and two neutrons, have an electrical potential energy of 6.43 times 10^-19 J. The value of the Coulomb constant is 8.98755 times 10^9 Nm^2/C^2, the charge on a proton is 1.6021 times 10^-19 C, and the acceleration of gravity is 9.8 m/s^2 What is the distance between these particles at this time?
The distance between the two alpha particles is approximately 0.735 nanometers.
The electrical potential energy of two alpha particles can be calculated using Coulomb's law formula for the potential energy of two charged particles. The formula is given by:
U = k * q1 * q2 / r, where
k is the Coulomb constantq1 and q2 are the charges of the two particlesr is the distance between them.We can rearrange this formula to solve for r:
r = k * q1 * q2 / U
Substituting the given values, we get:
r = (8.98755 x 10^9 Nm^2/C^2) * (2 x (1.6021 x 10^-19 C)) / (6.43 x 10^-19 J)
r = 0.735 x 10^-9 m
= 0.735 nanometers
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Draw diagram of the followings compound
2,5-dimethylhept-3-ene
5-ethyl-2,3-dimethylhept-1,3-diene
2,3-dimethylbut-2-ene
The images of the compounds are shown in the images attached.
How do you draw the image of a molecule?We know that a compound can be said to be formed from atoms. In the cases of the compounds that we have here, we have been asked to obtain the image of the compound.
What we would have to do here is to find the longest chain of carbon in the compound and this would be the parent chain that we have to draw. We would then look at the functional groups that we have and attach the substituents into the compound as appropriate.
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identify the limiting reactant and determine the mass of co2 that can be produced from the reaction of 25
This indicates that oxygen is the limiting reactant and that 645 moles of carbon dioxide will result from the reaction.
What is the phosphide ion?Any chemical molecule in which phosphorus is mixed with a metal is referred to as a phosphide. The phosphide ion is P3 and there are known phosphides of practically all the elements in the periodic table.
A 2 charge is what kind of ion?A magnesium atom will thus produce a cation with a charge of 2+ and two fewer electrons than protons. It is referred to as a magnesium ion and has the symbol Mg2+.
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2) Assuming a constant pressure, if the heated air had a temperature 100 deg * C and the water cooled the air to 25 deg * C what was the volume of the deflated balloon ?
The Charles law can give the new volume of the gas.
What is the new volume?This question is incomplete as the value of the initial volume was not shown. I can help you if I can point you to the Charles 's law.
We know that according to the Charles's law, the volume of a given mass of gas is directly proportional to the temprateure at a constnat pressure. This is the case eher. We would need to know the initial volume of the gas so that we can be able to use the Charlee's law in helping us to obtain the new volume of the gas.
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when conducting a single sample hypothesis test of means or proportions, i am comparing the mean or proportion of a sample to a benchmark mean or proportion.
When conducting a single sample hypothesis test of means or proportions, i am comparing the mean or proportion of a sample to a benchmark mean or proportion. is true statement.
This statement is true because the mean or proportion of a sample is compared to a benchmark mean or proportion when perform a single sample hypothesis test of means or proportions.
To compare a proportion of replies or mean in a sample of data to a (hypothesized) proportion in the population from which our sample data are obtained, one can use the single proportion (or one-sample) binomial test. We rarely have access to statistics for a whole population, so this is significant.
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a luminaire (lighting fixture) installed outside on the exterior wall of a building located on the campus of rice university must be marked as suitable for
A luminaire (lighting fixture) installed outside on the exterior wall of a building located on the campus of rice university must be marked as suitable for wet and damp locations. So, right option is option (b).
Luminaires installed in corrosive areas must be of a type suitable for the location. NEC 410.10(A) Luminaires installed in wet or damp locations must be properly marked “suitable for use in wet or damp locations”. (NEC) National Electrical Code Definition:
Dry Location: A location normally not exposed to humidity or moisture. Areas classified as dry may be temporarily damp or, as in the case of buildings under construction, damp.
Wet Location: A location protected from the weather and not saturated with water or other liquids, but with moderate humidity.
damp locations: installed in the basement or concrete slab or masonry in direct contact with the ground; locations that become saturated with water or other liquids, such as car wash areas; 4,444 exposed locations exposed to the weather. They are suitable for wet and damp areas.
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Complete question:
A luminaire (lighting fixture) installed outside on the exterior wall of a building located on the campus of rice university must be marked as suitable for______.
wet locations
dry locations
damp locations
a) I or II only
b) I or III only
c) I , II or III
d) I only
Which of the following is a hormone produced by the posterior pituitary?a. oxytocinb. ADHc. prolactind. None of the listed responses is correct.
The hormone that produced by the posterior pituitary is none of the listed responses is correct (D)
The posterior pituitary is one of the two lobes that form the pituitary gland, which is a little endocrine gland about the size of a pea and located at the base of the brain. The primary functions of the posterior pituitary include the storage and release of the hormone oxytocin and antidiuretic hormone (ADH, or vasopressin). The anterior lobe and the posterior lobe are the two components that make up the pituitary glands.
The anterior lobe is responsible for the production and release of hormones. It is the nerve cells in the hypothalamus that are responsible for the production of hormones; nevertheless, the posterior lobe is responsible for their release into the circulation of the body.
Thus, there is none of the listed responses is correct since the one that responsible for the production of hormones is hypothalamus.
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