What is the density of carbon dioxide at STP? (C=12.01g/mol; O=16.00g/mol) Chemistry Gases Molar Volume of a Gas 1 Answer Jane · Stefan V. Mar 4, 2018 0.00195 g/cm3 Explanation: The molar mass of CO2 is 12.01 g/mol+2⋅16 g/mol=44.01 g/mol At S.T.P, the molar mass of CO2 occupies 22.4 L=22400 cm3, i.e. 1 mol occupies 22400 cm3 So, the density of CO2 at S.T.P is =44.01 g22400 cm3=0.00195 g/cm3 Answer link Related questions How do stoichiometric ratios relate to molar volume of a gas? How do you calculate molar volume of a gas at STP? How do you find the molar volume of hydrogen gas? How do you calculate molar volume of oxygen gas? What is molar gas volume? What is the volume at 0 °C and 1 atm of a mixture that contains 4.0 g of methane and 2.0 g of helium? What is the difference between STP and NTP? What is the volume of .25 moles of oxygen (O2) Gas? Why would knowing the molar volume of a gas be important? Why is 22.4 liters called the molar volume of a gas? See all questions in Molar Volume of a Gas Impact of this question 30643 views around the world You can reuse this answer Creative Commons License