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ZIMSEC O-Level Chemistry

7.1.5The mole concept

The mole concept in ZIMSEC O-Level Chemistry: what the syllabus expects you to know, the learning objectives and how to practise.
Topic102 practice questions5 lessons
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In this topic

Lessons

  • Concentration of solutions

    30 min

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  • Relative atomic, molecular and formula masses

    30 min

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  • The mole and the Avogadro constant

    35 min

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  • Percentage composition, empirical and molecular formulae

    35 min

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  • Molar gas volume

    30 min

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Sample question

A sample question on this topic. Answer it, check it, then read the worked answer.

The mole concept: sample question

1 mark

5.0 g of salt is dissolved in water and the solution is made up to 200 cm³. Calculate the concentration of the solution in g/dm³.

Answer in g/dm³.

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