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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 57

A manufacturer tests sulfur dioxide sensors using sealed calibration vessels.

The relative formula mass ( $M_r$ ) of sulfur dioxide, $SO2\text{SO}_2$ , is 64.

Use the equation:

$\dfrac{m}{M_r}$

where $n\,$ is the amount in mol and $m\,$ is the mass in g.

a.

A calibration vessel is filled with 3.2 g of sulfur dioxide.

Calculate the amount of sulfur dioxide added.

Give your answer in mol.

[2]

b.

A second calibration vessel must contain 0.20 mol of sulfur dioxide.

Calculate the mass of sulfur dioxide needed.

Give your answer in grams.

[2]

Markscheme

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.

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