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Worksheet 23: Mole calculations in equatio Topic 6
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Set A : Mole – Mole problems Objective: To test your ability to solve mole- mole
problems in balanced chemical equations

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

1. Given the balanced chemical equation: Ca + 2H2O ---------- > Ca(OH) 2 + H2
What is the total number of moles of Ca that
will react with 6 moles of water?

2. Given the balanced chemical equation : 2N2O5(g) ---------- > 4 NO2(g) + O2(g)
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What is the total number of moles of NO2
that will be produced from 5 moles of N2O5?

3. Given the balanced chemical equation: CH4 (g) + 2O2(g) -------- > CO2(g) + 2 H2O(l)
How many moles of CO2 will be produced
from reacting 7.4 moles of O2 ?

4. Given the balanced combustion reaction: 2C2H2 + 5O2 -------- > 4CO2 + 2H2O

How many moles of C2H2 is needed to
completely react with 11.5 moles of O2? Need help? Study Book pg 133 Set 16

5. Given the balanced chemical equation: 3HCl + 8HNO3 ------- > 2 NO + 2Cu(NO3)2 + 4H2O
What is the total number of moles of Cu
needed to produce 9.0 moles of NO?

6. Given the balanced chemical equation: 3H2(g) + N2 (g) ------- > 2NH3 (g)
How many moles of ammonia can be
produced by reacting 2.8 moles of nitrogen?

7. Given the balanced chemical equation: 2Li (s) + H2SO4(aq) ----------- > Li2SO4 + H2 (g)
How many moles of lithium must react to
produce 3.3 moles of lithium sulfate?

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