Question

a chemical reaction produces .884 mols of H2S gas. what volume will the gas occupy at STP? Knowing the molar mass is 32.0 g/mol, what is the density of this gas?

Answer 1

n=V/Vdm^3
0.884=V/22.4dm^3
V=0.884×22.4
V=19.8dm^3
V=19.8×1000cm^3
V=198000cm^3
n=m/M
0.884mol×32.0g/mol=m
m=28.29g
Density of H2S=m/v
===>28.29/198000
===>1.429×10^-4