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WorksheetsIntro to Stoichiometry - Mole Ratios
Total questions: 14
Worksheet time: 11mins
Stoichiometry refers to...?
Determining if there are more reactants than products in a chemical reaction
The measurement of elements on the periodic table
The ratio of reactants to products expressed by a chemical equation
both b and c
The ratio of reactants to products in a balanced chemical equation is most similar to a ...
a recipe with the amounts of each ingredient needed
a list of the ingredients needed in the recipe
A recipe with the amounts of each ingredient and the product yield
a list of the most important ingredients in the recipe
Write your answer as a ratio or a fraction e.g. 2/3
Based on the following chemical reaction, what is the ratio of ammonia (NH3) to hydrogen?
N2 + 3H2 --> 2NH3
(a)
Based on the following chemical reaction, what is the ratio of ammonia (NH3) to nitrogen?
N2 + 3H2 --> 2NH3
(a)
Based on the following chemical reaction, what is the ratio of hydrogen to nitrogen?
N2 + 3H2 --> 2NH3
(a)
Based on the following chemical reaction, what is the ratio of oxygen to water produced?
2H2 + O2 --> 2H2O
(a)
Based on the following chemical reaction, what is the ratio of hydrogen to water produced?
2H2 + O2 --> 2H2O
(a)
2H2 + O2 --> 2H2O
Based on the ratios in the chemical equation, if you have 4 mol of hydrogen, how many moles of water will be produced?
1
2
4
8
3H2 + N2 --> 2NH3
Based on the ratios in the chemical equation, if you have 33 mol of hydrogen, how many moles of ammonia will be produced?
11
22
33
66
C3H8 + 5O2 --> 4H2O + 3CO2
Based on the ratios in the chemical equation, how many moles of oxygen are required if 80 moles of water are produced?
20
60
80
100
C3H8 + 5O2 --> 4H2O + 3CO2
Based on the ratios in the chemical equation, if 1.25 moles of C3H8 start the reaction, how many moles of water will be produced?
5.00
3.75
6.25
1.25
Based on the previous calculation, the desired amount of reactant or product can be determined by...
multiplying the given amount in the question by the coefficients of reactant/products
multiplying the given amount in the question by the chemical coefficients of needed/given
multiplying the given amount in the question by the chemical coefficients given/needed
multiplying the given amount in the question by the coefficients of products/reactants
TRUE OR FALSE
The coefficients in a balanced chemical equation indicate the proportions of reactants needed to produce a specific amount of product
TRUE
FALSE
PREDICT: TRUE OR FALSE
Based on the answer to the previous question, we can also use the coefficients in a balanced chemical equation to determine the mass of a desired reactant or product.
TRUE
FALSE
