What is the density of carbon dioxide at STP? (C=12.01g/mol; O=16.00g/mol)

1 Answer
Mar 4, 2018

"0.00195 g/cm"^30.00195 g/cm3

Explanation:

The molar mass of CO_2CO2 is "12.01 g/mol" + 2*"16 g/mol" = "44.01 g/mol"12.01 g/mol+216 g/mol=44.01 g/mol

At S.T.P, the molar mass of CO_2CO2 occupies "22.4 L" = "22400 cm"^322.4 L=22400 cm3, i.e. "1 mol"1 mol occupies "22400 cm"^322400 cm3

So, the density of CO_2CO2 at S.T.P is

= "44.01 g"/("22400 cm"^3) = "0.00195 g/cm"^3=44.01 g22400 cm3=0.00195 g/cm3