How many grams of co2 gas would occupy 33.7 l of volume at a temperature of

–22.2oc and a pressure of 990 mm hg?

93.75 g.

Explanation:

where, P is the pressure of the gas in atm (P = 990 mmHg = 1.3 atm).

V is the volume of the gas in L (33.7 L).

n is the no. of moles of the gas in mol.

R is the general gas constant (R = 0.082 L.atm/mol.K),

T is the temperature of the gas in K (T = – 22.2°C + 273 = 250.8 K).

∴ n = PV/RT = (1.3 atm)(33.7 L)/(0.082 L.atm/mol.K)(250.8 K) = 2.13 mol.

The no. of grams of CO₂ = no. of moles x molar mass = (2.13 mol)(44.01 g/mol) = 93.75 g.

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