At room temperature, one mole of an ideal gas occupies about 24 dm^3. Which expression gives the number of moles from a gas volume V (in dm^3)?

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Multiple Choice

At room temperature, one mole of an ideal gas occupies about 24 dm^3. Which expression gives the number of moles from a gas volume V (in dm^3)?

Explanation:
The number of moles is found by dividing the gas volume by its molar volume. At room temperature, one mole of an ideal gas occupies about 24 dm^3, so the amount in moles is n = V / 24. This follows from the definition of molar volume as the volume per mole. Dividing the total volume by 24 dm^3 per mole gives the correct count of moles. Expressions that multiply by 24 or involve a square root don’t reflect the volume-per-mole relationship and would yield incorrect values or units.

The number of moles is found by dividing the gas volume by its molar volume. At room temperature, one mole of an ideal gas occupies about 24 dm^3, so the amount in moles is n = V / 24. This follows from the definition of molar volume as the volume per mole. Dividing the total volume by 24 dm^3 per mole gives the correct count of moles. Expressions that multiply by 24 or involve a square root don’t reflect the volume-per-mole relationship and would yield incorrect values or units.

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