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

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Question 18

Hydrogen and oxygen react to form water in a sealed vessel. When the reaction stops, some hydrogen is still present.

Which statement is correct?

[1]
A

Adding more hydrogen would allow more water to form.

B

Adding more oxygen would not change the mass of water formed.

C

Leaving the vessel for longer would allow more water to form.

D

Adding more oxygen would allow more water to form.

Markscheme

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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