Question #b18da

1 Answer

You need to know the density.

Explanation:

From atomic masses in the compound, you can work out the molecular mass, and thus the mass of one mole. You will then have to look up the density #rho# of the compound, whether liquid or solid.

Then, because #rho=m/V->V=m/rho#

Note:
For gases this is different. All ideal gases have the same molar volume, that only depends on temperature and pressure. At a standard pressure of #"1 atm"#, the molar volume is #"22.4 L"# at #"273 K" = 0^@ "C"# and #"24.5 L"# at #"298 K" = 25^@ "C"#.