What is the equation that links number of moles (n), gas volume (V) and molar volume (Vm)?

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n =VmV



n = number of moles (mol)

V = volume of gas (dm3)

Vm = molar volume (dm3 mol-1)

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What is the volume, in cm3, of 1 mole of gas at room temperature and pressure?

24,000 cm3

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What is the volume, in dm3, of 1 mole of gas at room temperature and pressure?

24 dm3

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What is room temperature (in K) and pressure (in kPa)?

Temperature: 293 K 

Pressure: 101 kPa

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Would 5 moles of gaseous hydrogen and 5 moles of gaseous oxygen have the same volume?

Yes, they would have the same volumes.


As long as the conditions remain the same, all gases occupy the same volume per mole.

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How do you convert between units of dm3 and cm3?

To convert from dm3 into cm3, multiply by 1,000.

To convert from cm3 into dm3, divide by 1,000.

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