WorksheetsStoichiometry Review
Total questions: 15
Worksheet time: 15mins
What is the mole ratio between FeO and Al2O3?
1 mole FeO = 2 mole Al2O3
1 mole FeO = 3 mole Al2O3
3 mole FeO = 2 mole Al2O3
3 mole FeO = 1 mole Al2O3
N2 + 3 H2 --> 2 NH3
Choose the correct set up to convert 36 L of NH3 to L of H2
Ms. Piskor made aspirin in the lab. She was supposed to make 150 grams, but was only able to produce 87 grams.
Calculate the percent yield
58%
87%
150%
172%
How many moles of NO3 are in 155 grams of NO3?
1 mole NO3
1.5 mole NO3
2 mole NO3
2.5 mole NO3
How many grams of NO3 are in 0.50 moles of NO3?
19.8 grams
31.0 grams
99.5 grams
155 grams
How many moles of MgCl2 are in 3.7 x 1024 formula units of MgCl2?
1.23
6.15
3.94
8.52
How many liters of Cl2 are in 5 moles of Chlorine gas, Cl2?
4.48
56
75
112
What is the molar mass of NO3?
28 grams
58 grams
62 grams
90 grams
The quantitative relationship between the amount of reactants and products in a chemical reaction is called?
mole ratio
stoichiometry
molar mass
coefficient
You must convert grams to moles using molar mass to do stoichiometry.
True
False
In the reaction 2 H2 + O2 → 2 H2O what is the mole ratio of oxygen to water
1/2
2/1
3/4
4/3
What does the coefficient in front of reactants and products represent in balanced equations?
number of moles
type of reaction
position on the periodic table
number of compounds
What is the mole ratio of hydrogen to ammonia in the reaction: @@ ext{N}_2 + 3 ext{H}_2 ightarrow 2 ext{NH}_3@@?
1:1
3:2
2:3
1:3
In a stoichiometric calculation, how many grams of water are produced from 4 moles of hydrogen gas reacting with excess oxygen? (Molar mass of water = 18 g/mol)
36 grams
72 grams
144 grams
18 grams
If 5 moles of carbon dioxide are produced in a reaction, how many moles of oxygen were consumed? (Assume complete combustion of a hydrocarbon)
5 moles
10 moles
2.5 moles
7.5 moles
