Calculating the volume of a certain number of moles

2 marks · Hard

State the volume, in dm³ and in cm³, that 1 mole of a gas would occupy at room temperature and pressure (rtp).

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24 dm³ and 24,000 cm³

Also accept: 24 dm³; 24,000 cm³; 24 dm^3 and 24,000 cm^3

Common mistakes: 1 dm³ and 1000 cm³; 22.4 dm³ (wrong value for rtp)

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Marking points

B1 · 1 mark · States correct value in dm³: 24 dm³

B2 · 1 mark · States correct value in cm³: 24,000 cm³

Worked solution

At room temperature and pressure (rtp):

1 mole of any gas occupies 24 dm³.

1 mole of any gas also occupies 24,000 cm³.