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Every question is written against the published AQA GCSE Chemistry syllabus and reviewed for accuracy before being added to the bank. We match the command words (state, describe, explain, evaluate), mark allocations, and difficulty tier you'll see on real AQA past papers. Explanations are written in the style of official examiner mark schemes so students learn exactly what marks are being awarded for.

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AQA · GCSE · Chemistry

One real Chemistry question.
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Topic: Quantitative chemistry: use of moles to balance equations and calculate reacting volumes of gases. Pick an answer — get the mark scheme instantly.

Question · Difficulty 2/3

A student collects 48 dm³ of ammonia at room temperature and pressure. How many moles of ammonia is this?

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One real Chemistry question.No signup. 30 seconds.

One real Chemistry question.
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