Question

what is the mass of 448cm3 of carbon dioxide at stp

Answer 1

Answer:

one mole of CO2 at STP occupies 22.4 liters. Since a liter is defined as the volume contained within a 10 cm x 10 cm x 10 cm cube (1000 cm^3), you can do a proportion:

1mole/22,400 cm^3 = x/224 cm^3;

x = 0.01, so 0.01 mole of CO2 occupy 224 cm^3 at STP

CO2 has a molar mass of 44.0 g/mol,

(0.01 mol CO2)(44.0gCO2lmol CO2) = 0.44 g CO2

Explanation:

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