Chemistry

Problem

The molar mass of helium is

4.00 \text{ g mol}^{-1}

. a. Calculate the volume of

1.0 \text{ mol}

of helium at standard temperature and pressure (stp), i.e. at

T = 273 \text{ K}

P = 1.0 \times 10^5 \text{ Pa}

. b. Determine the density of helium at stp.