N2 + 3H2 mc033-1.jpg 2NH3 What is the percent yield of NH3 if the reaction of 26.3 g of H2 produces 79.0 g of NH3?
Answers
The balanced chemical reaction is:
N2 + 3H2 = 2NH3
We are given the amount of H2 being reacted. This will be our starting point.
26.3 g H2 (1 mol H2 / 2.02 g H2) 2 mol O2/3 mol H2) ( 17.04 g NH3 / 1mol NH3) = 147.90 g O2
Percent yield = actual yield / theoretical yield x 100
Percent yield = 79.0 g / 147.90 g x 100
Percent yield = 53.4%
Answer:
53.4 percent yield, the fourth option
Explanation:
Related Questions
Which of the following could be a correct measurement using the full precision available for this balance?24.0 g 24.00 g 24 g 24.0000 g
What three things happen in order for a chemical reaction to occur?
The escape of molecules from the surface of a liquid is known as _____.A. Sublimation B. Condensation C. Evaporation D. Boiling
How do molecules in a solid differ from those in a liquid or gas
b. natural gas
c. petroleum
d. methanol
Answers
1:1
1:2
3:2
5:4
Answers
Answer: The mole ratio of hydrogen to ammonia is 3 : 2
Explanation:
Mole ratio is defined as the ratio of number of moles of the substances whose ratio is to be calculated.
In a chemical reaction, the stoichiometric coefficients represents the number of moles.
For the given chemical reaction of production of ammonia follows:
By stoichiometry of the reaction:
1 mole of nitrogen reacts with 3 moles of hydrogen to produce 2 moles of ammonia.
So, the mole ratio of hydrogen to ammonia in a given chemical reaction is 3 : 2
The mole ratio of hydrogen to ammonia is 3:2.
The mole ratio of hydrogen to ammonia can be determined by examining the balanced chemical equation for the reaction:
N₂ + 3H₂ ⇒ 2NH₃
From the equation, we can see that 3 moles of hydrogen react with 1 mole of nitrogen to produce 2 moles of ammonia.
The coefficients in the balanced equation represent the mole ratio between the reactants and products. Here's a breakdown:
For every 1 mole of nitrogen, require 3 moles of hydrogen.
These 3 moles of hydrogen will react with 1 mole of nitrogen to produce 2 moles of ammonia.
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Answers
b. The ionization energy increases because the ratio of the protons to electrons increases.
c. The ionization energy decreases because the ratio of the protons to electrons decreases.d)The ionization energy increases because the ratio of the protons to electrons decreases.
Answers
The first and second electrons from an atom can be explained by "the ionization energy decreases because the ratio of the protons to electrons increases."
What is ionization energy?
Ionizations energy, also referred as ionization potential, is the amount of energy necessary to remove an electron from an isolated atom or molecule.
What is electrons?
The electron is just a subatomic particle with a negatively fundamental charged. Consider the nuclear charge of the atom to understand this. The greater the number of protons in the nucleus, the stronger the nucleus's attraction to electrons. This increased affinity makes removing electrons more challenging. The ionization energy reduces within a group as the atom size increases.
The ionization energy falls as the proton-to-electron ratio grows. When electrons are removed from an atom, it becomes more positive, increasing the attraction interactions between protons and neutrons. This makes removing the succeeding electrons more difficult, resulting in a larger ionization energy.
Hence the correct option is a.
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calcium-40
molybdenum-98
mercury-194
Answers
The "mercury-194" is a kind of isotope which is untastable and radioactive.
What is isotope?
Isotopes may be members of the very same element's family but also have variable counts of neutrons despite roughly the identical count of protons.
What is radioactive?
An unstable nucleus of an atom releases energy through radiation in a process known as radioactive decay.
Therefore, the "mercury-194" is a kind of isotope which is untastable and radioactive.
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Answer: Mercury-194 is an unstable isotope and hence is radioactive.
Explanation: Mercury-194 is an isotope of mercury, having formula
Number of protons in this isotope = 80
Number of neutrons in this isotope = 114
This isotope is radioactive in nature and under decay process by Electron Capture.
Electron capture reactions are the reactions in which a proton in a nucleus absorbs an electron and convert it into neutron. The resulting nucleus will have a decreased atomic number and same atomic mass.
Reaction for electron capture of mercury-194 follows:
Answers
NaOH + HCl → NaCl + H2O
We are given the amount of sodium hydroxide to be used up in the reaction. This will be the starting point for the calculation.
2.75 x 10^-4 mol NaOH ( 1 mol H2O / 1 mol NaOH ) ( 18.02 g H2O / 1 mol H2O ) = 4.96 x 10^-3 g H2O
Answer:
0.00496
Explanation:
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