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

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Question 60

A container holds 750 cm3 of calcium chloride solution with a concentration of 32 g/dm3.

A technician removes 250 cm3 of the solution. Water is then added to the remaining solution until its volume is 800 cm3.

a.

Calculate the mass of calcium chloride in the solution after the technician removes 250 cm3.

[4]
b.

Calculate the concentration of the calcium chloride solution after the water is added.

[2]
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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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