12 g of carbon contains 6.02 × 10²³ atoms. Which expression is used to calculate the mass of one atom of carbon?

Answer options:

12 / (6.02 × 10²³)

(6.02 × 10²³) / 12

12 × 6.02 × 10²³

How to approach this question

You are given the total mass for a specific number of atoms. To find the mass of a single atom, you need to divide the total mass by the number of atoms.

Full Answer

A.12 / (6.02 × 10²³)✓ Correct

The question states that 6.02 × 10²³ atoms of carbon have a mass of 12 g. To find the mass of a single atom, you must divide the total mass by the number of atoms. \n\nMass of one atom = Total mass / Number of atoms\nMass of one atom = 12 g / 6.02 × 10²³ atoms

Common mistakes

✗ Inverting the fraction (dividing number of atoms by mass).\n✗ Multiplying the two numbers together.

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12 g of carbon contains 6.02 × 10²³ atoms. Which expression is used to calculate the mass of one atom of carbon?

How to approach this question

Full Answer

Common mistakes

Practice the full AQA GCSE Chemistry Foundation Tier Paper 1

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