A sample of oxygen gas collected at a pressure of 1.20 atm and a temperature of 304 K is found to occupy a volume of 761 milliliters. How m?

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2017-11-07 8:59 pm

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A sample of oxygen gas collected at a pressure of 1.20 atm and a temperature of 304 K is found to occupy a volume of 761 milliliters. How many moles of O2 gas are in the sample? mol

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2017-11-07 11:05 pm

Pressure, P = 1.20 atm
Volume, V = 761 mL = 0.761 L
Temperature, T = 304 K
Gas constant, R = 0.08206 atm L / (mol K)

Gas law : PV = nRT
Number of moles of O₂, n = PV/(RT) = 1.20 × 0.761 / (0.08206 × 304) = 0.0366 mol

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