Question detail

For Moles (HT only), which unit conversion answer best supports this Unit 4.3 objective: (HT only) Use the value 6.02 x 10^23 per mole for the Avogadro constant?

Try the question, check the answer, then read the explanation to understand the curriculum point.

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At a glance

MCQ

Type

practice

Style

Topic

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

Question

A. 10 g/dm³
B. Wrong unit conversion: confuses HT only with a nearby Unit 4.3 idea
C. Wrong unit check: uses the wrong unit for Moles (HT only)
D. Wrong calculation link: does not support (HT only) Use the value 6.02 x 10^23 per mole for the Avogadro constant

Answer

The correct option is 10 g/dm³. The calculated answer is 10 g/dm3.

Explanation

The correct option is 10 g/dm³. This uses Concentration in g/dm3 because the objective is about (HT only) Use the value 6.02 x 10^23 per mole for the Avogadro constant. This unit conversion variant asks students to separate HT only from similar Unit 4.3 calculation steps. The reasoning belongs to Moles (HT only) within Use of amount of substance in relation to masses of pure substances, so it should not be confused with nearby quantitative ideas such as mass, moles, concentration, yield, atom economy, or gas volume unless those are named in the objective. Use the focus term HT only to keep the answer aligned with AQA GCSE Chemistry 8462 Unit 4.3. The other options are weaker because they either use the wrong formula, the wrong unit, a vague relationship, or the wrong quantitative context.

Common mistake

Misunderstanding Avogadro's Constant

Students often confuse the value of Avogadro's constant with the number of moles, thinking it represents the amount of substance rather than the number of particles in one mole.

Clarify that Avogadro's constant (6.02 x 10^23) specifically refers to the number of atoms, molecules, or ions in one mole of any substance, and emphasize the distinction between moles and the number of particles. Keep the correction anchored to Moles (HT only); check formula, substitution, calculation, final answer, and unit where relevant.

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