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Worksheet 23: Mole calculations in equations Topic 6

Set B : Volume – Volume problems Objective: To test your ability to solve volume-volume

problems in balanced chemical equations

Calculate the number of liters in each problem. Show set up underneath the equations. Write your final
answers in the boxes.
1. Given the balanced chemical equation: 2Cl2 + 2H2O --------- > 4HCl + O2
What is the total number of liters of O2(g)
produced when 8 liters of Cl2 (g) reacts with water?

2. Given the balanced chemical equation : 2SO2(g) + O2(g) ------ > 2SO3(g)
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At STP, how many liters of SO2 will react with O2
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to produce 9.0 liters of SO3? Need help? Study Book pg 134 Set 17

3. Given the balanced chemical equation: CH4 (g) + 2O2(g) ----------- > CO2(g) + 2 H2O(l)
What is the total volume of CO2 produced
when 5.7 liters of CH4 reacted?

Set C : Mass - Mass problems Objective: To test your ability to solve mass-mass

problems in balanced chemical equations

Calculate the number of grams in each problem. Show set up underneath the equations. Write your
final answers in the boxes.

1. Given the balanced combustion reaction: 2C2H6 + 7O2 -------- > 4CO2 + 6H2O
What is the total mass of C2H6 that will react
to produce 72 grams of H2O?

1. Given the balanced chemical equation: Mg + H2SO4 -------- > MgSO4 + H2
What is the total number of grams of MgSO4
produced when 100 grams of Mg is reacted?

Need help? Study Book pg 135 Set 18
3. Given the balanced chemical equation: 2KClO3 ------------- > 2KCl + 3O2
What is the total number of grams of KClO3
that will react to produce 32 grams of O2 at STP?

4. Given the balanced chemical equation: 2Li (s) + H2SO4(aq) ------- > Li2SO4 + H2 (g)
How grams of Lithium sulfate is produced
from reacting 27 grams of Lithium ?

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