Oxygen (molar mass = 32 g)occupies a volume of 12 liters when its temperature is 20°C and its pressure is 1 atm.Using R = 0.082 liter.atm/mole.K, calculate the mass of the oxygen:

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Quizplus · Accepted Answer

Using the ideal gas law PV = nRT, where P = 1 atm, V = 12 L, R = 0.082 L·atm/mol·K, and T = 273 + 20 = 293 K, we find n = PV/RT = (1*12)/(0.082*293) ≈ 0.5 moles. The mass is moles * molar mass = 0.5 * 32 = 16 g.

Oxygen (Molar Mass = 32 G)occupies a Volume of 12