A sample of gas at 42°C has a volume of 5.2 L and exerts a pressure of 1.00 atm. How many moles of gas are in the sample?
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Use ideal gas law. PV=nRT.Solve for n and substitute R=0.08206 L-Atm/mol-K, T=(273+42)K=315K, V=5.2 L, P = 1.00 atm.
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