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3.2 Use of amount of substance in relation to masses of pure substances

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Question 17

Iron disulfide reacts with oxygen according to the balanced equation.

4FeS2+11O2→2Fe2O3+8SO24\text{FeS}_2 + 11\text{O}_2 \rightarrow 2\text{Fe}_2\text{O}_3 + 8\text{SO}_24FeS2​+11O2​→2Fe2​O3​+8SO2​

How many moles of oxygen are needed to produce 4 mol of sulfur dioxide?

[1]
A

5.5 mol5.5\ \text{mol}5.5 mol

B

4.0 mol4.0\ \text{mol}4.0 mol

C

11 mol11\ \text{mol}11 mol

D

2.9 mol2.9\ \text{mol}2.9 mol

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3.2 Use of amount of substance in relation to masses of pure substances Questions

  1. GCSE
  2. /Chemistry
  3. /3.2 Use of amount of substance in relation to masses of pure substances

131 exam-style questions on AQA GCSE Chemistry 3.2 Use of amount of substance in relation to masses of pure substances, covering 3.2.1 Moles, 3.2.2 Amounts of substances in equations, 3.2.3 Using moles to balance equations, 3.2.4 Limiting reactants, 3.2.5a Concentration of solutions, and 3.2.5b Relating mass, volume and concentration. Each one has a worked solution and a mark scheme showing where the marks go.

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