Chemistry: Chapter 12 Study Guide – Flashcards

question
The calculation of quantities in chemical reactions.
answer
stoichiometry
question
The quantities to consider in a chemical reaction?
answer
atoms, molecules, moles, mass, and volume
question
On the left side of a chemical equation, you have the?
answer
reactants
question
On the right side of a chemical equation, you have the?
answer
products
question
In every chemical reaction, these two things are conserved.
answer
atoms and mass
question
In a majority of chemical reactions, these three things are NOT conserved.
answer
moles, molecules, and volume
question
The 3 in 3H2 refers to the number of?
answer
molecules
question
How many atoms are in N2 + 3H2?
answer
8
question
What is the ratio of molecules in N2 (g) + 3H2 (g) --> 2NH3 (g)
answer
1:3:2
question
How many atoms are in 3H2?
answer
6
question
How many moles in 2NH3?
answer
2
question
How many molecules in 3H2?
answer
3
question
How many moles in N2?
answer
1
question
Mass of N2?
answer
28g
question
Volume of 2NH3?
answer
44.8 L
question
How many molecules are in one mole of something?
answer
6.02x10^23 molecules
question
What is the molar mass of NH3?
answer
17.0g
question
What is the molar mass of H2?
answer
2.0g
question
Where do you go to find the molar mass of an element?
answer
periodic table
question
What is the STP value?
answer
22.4L
question
This limits or determines the amount of product that can be formed in a reaction.
answer
limiting reagent
question
The reactant that is not completely used up in a reaction.
answer
excess reagent
question
The maximum amount of product that could be formed from given amounts of reactants.
answer
theoretical yield
question
The amount of product that actually forms when the reaction is carried out in the laboratory.
answer
actual yield
question
The ratio of the actual yield to the theoretical yield expressed as a percent.
answer
percent yield
question
What is the formula for percent yield?
answer
actual yield/theoretical yield x 100%
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question
The calculation of quantities in chemical reactions.
answer
stoichiometry
question
The quantities to consider in a chemical reaction?
answer
atoms, molecules, moles, mass, and volume
question
On the left side of a chemical equation, you have the?
answer
reactants
question
On the right side of a chemical equation, you have the?
answer
products
question
In every chemical reaction, these two things are conserved.
answer
atoms and mass
question
In a majority of chemical reactions, these three things are NOT conserved.
answer
moles, molecules, and volume
question
The 3 in 3H2 refers to the number of?
answer
molecules
question
How many atoms are in N2 + 3H2?
answer
8
question
What is the ratio of molecules in N2 (g) + 3H2 (g) --> 2NH3 (g)
answer
1:3:2
question
How many atoms are in 3H2?
answer
6
question
How many moles in 2NH3?
answer
2
question
How many molecules in 3H2?
answer
3
question
How many moles in N2?
answer
1
question
Mass of N2?
answer
28g
question
Volume of 2NH3?
answer
44.8 L
question
How many molecules are in one mole of something?
answer
6.02x10^23 molecules
question
What is the molar mass of NH3?
answer
17.0g
question
What is the molar mass of H2?
answer
2.0g
question
Where do you go to find the molar mass of an element?
answer
periodic table
question
What is the STP value?
answer
22.4L
question
This limits or determines the amount of product that can be formed in a reaction.
answer
limiting reagent
question
The reactant that is not completely used up in a reaction.
answer
excess reagent
question
The maximum amount of product that could be formed from given amounts of reactants.
answer
theoretical yield
question
The amount of product that actually forms when the reaction is carried out in the laboratory.
answer
actual yield
question
The ratio of the actual yield to the theoretical yield expressed as a percent.
answer
percent yield
question
What is the formula for percent yield?
answer
actual yield/theoretical yield x 100%
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