One mole of any gas has a volume of 24 dm³ or 24,000 dm³ at room temperature. This is the molar volume of gas

**Method 1: Calculating volume of gas from amount of gas **

volume of gas (dm³) = amount x 24

volume of gas (cm³ ) = amount x 24,00

Worked example: Hydrogen gas –

Amount: 3 mol

Volume = 3 x 24 = 72 dm³

**Method 2: Calculating amount of gas from the volume of gas **

Amount of gas (moles) = volume (dm³ ) / 24 or volume cm³ / 24,000

Worked example: Sulphur dioxide

Volume = 960 dm³

Amount = 960 / 24 = 40 mol

This is a paper 2, triple science fact

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