Question

If an engineer needs to design a helium tank with a capacity of 725 moles at STP, how big (volume) should it be?

Answer 1

At `STP` `1` mole of Ideal gas occupies a volume of `22.4*dm^-3`

Explanation:

So simply mulitply the molar quantity by the molar volume:

`22.4*dm^3*mol^-1xx725*mol` `=` `??m^3`

Remember that `1L` `=` `1` `dm^3` `=` `(1xx10^-1*m)^3` `=` `(1/10^3)m^3`