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Question bank·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 17

A student weighs out a 44.4 g sample of pure calcium chloride, $CaCl2\text{CaCl}_2$ .

Relative formula mass ( $M_r$ ): $CaCl2=111\text{CaCl}_2 = 111$

The Avogadro constant is 6.02 × 10²³ per mole.

Calculate the number of chloride ions present in the sample.

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

GCSE
Chemistry
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.