WorksheetsStoichiometric Calculations
Total questions: 20
Worksheet time: 2hrs 11mins
STP stands for
Standard Temperature and Pressure
Standard Temperature or Pressure
Satisfied Temperature and Pressure
Selected Temperature and Pressure
For the following balanced chemical equation
2K + F2 --> 2KF
how many moles of KF are present?
2 mol of KF
1 mol KF
Using the balanced equation below
2Ca + O2 --> 2CaO
Predict the number of particles of Ca
6.02x1023
1.204x1024
6.02x1022
1.204x1023
For the balanced equation shown below
4Fe + 3O2 --> 2Fe2O3
What is the volume of O2 gas at STP
22.4L
44.8L
67.2L
134.4L
6.0 mol of aluminium reacts with oxygen to form aluminium oxide. What is the amount of oxygen, in mol, needed for complete reaction?
4Al(s) + 3O2(g) → 2Al2O3(s)
1.5
3.0
4.5
6.0
Nitrogen reacts with hydrogen to give ammonia, NH3 in a closed container. How many moles of H2 are needed to produce 25 mol of NH3?
N2 + 3H2 → 2NH3
A) 12.5
B) 25
C) 37.5
D) 50
E) 62.5
According to the following equation;
C + HNO3 → CO2 + NO2 + H2O
2.4 grams C is reacted with concentrated HNO3 acid. How many liters of NO2 are produced at STP? (C: 12) (Balance the equation first)
A) 5.6
B) 11.2
C) 16.8
D) 17.92
E) 22
For the following balanced chemical equation
2Al(s) + 6HCl(l) → 2AlCl3(s) + 3H2(g)
how many moles of H2 are present?
1 mol
2 mol
3 mol
4 mol
6 mol
In a stoichiometric calculation to determine the mass of one substance that will react with a given amount, in moles, of a second substance, you need to know
only the mole ratio of the unknown substance to the given substance.
only the molar mass of the given substance.
both the mole ratio of the unknown substance to the given substance and the molar mass of the unknown substance.
the molar masses of all products and reactants.
Magnesium reacts with hydrochloric acid to produce hydrogen gas and magnesium chloride. How many liters of a 0.750 M HCl solution will react with 12.25 g of Mg?
Mg(s) + 2HCl(aq)→H2(g) + MgCl2(aq)
1.34 L
2.34 L
3.34 L
4.34 L
6.0 mol of aluminium reacts with oxygen to form aluminium oxide. What is the amount of oxygen, in mol, needed for complete reaction?
4Al(s) + 3O2(g) → 2Al2O3(s)
1.5
3.0
4.5
6.0
What is the mass of CO2 produced when 35g of O2 reacts?
How many moles of glucose, C6H12O6 can be "burned" biologically when 10.0 mol of oxygen is available? C6H12O6 (s) + 6O2 (g) → 6CO2 (g) + 6H2O(l)
A- 0.938 mol
B- 1.67 mol
C- 53.3 mol
D- 60.0 mol
Nitrogen reacts with hydrogen to give ammonia, NH3 in a closed container. How many moles of H2 are needed to produce 25 mol of NH3?
N2 + 3H2 → 2NH3
A) 12.5
B) 25
C) 37.5
D) 50
E) 62.5
Gas grills use propane fuel. The combustion of propane is represented in this equation:
C3H8 + 5O2 ----> 3CO2 + 4H2O. How many grams of propane will burn when 36.0 moles of water are formed?
0.500 g C3H8
9.00 g C3H8
318 g C3H8
397 g C3H8
How many grams of hydrogen are produced if 120 g of Na are available?
How many moles of carbon dioxide are produced from the combustion of 110 g of CH4?
What mass of O2 will be needed to burn 36.1 g of B2H6?
