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

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

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Question 19

An autonomous underwater vehicle (AUV) is designed to map the seabed of a marine sanctuary. The AUV's propulsion and sensor systems require an average of 3.5 kJ3.5\text{ kJ}3.5 kJ of energy to travel 1 m1\text{ m}1 m. The onboard fuel cell runs on a liquid chemical fuel that has an energy content of 1050 kJ/mol1050\text{ kJ/mol}1050 kJ/mol.

Calculate the number of moles of this fuel needed by the AUV to complete a mapping mission of length 4.8 km4.8\text{ km}4.8 km.

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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

38 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 (HT only), 3.2.2 Amounts of substances in equations (HT only), 3.2.3 Using moles to balance equations (HT only), 3.2.4 Limiting reactants (HT only), and 3.2.5 Concentration of solutions. Each one has a worked solution and a mark scheme showing where the marks go.

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