1. Ariadne is attempting to identify a gas by measuring its molar mass. She has determined that it is a noble gas. At 25.8 °C and 785 torr, a sample of the gas weighing 5.024 g occupies a volume of 1424 mL. Calculate the molar mass of the gas. (Show your work.)
What is the identity of the gas?

2. A propane tank is sitting in the shade, where the temperature is 17.6 °C. The gas pressure inside the tank is 9.95 atm. If 9.85 L of the compressed gas is released from the tank into a hot grill with a temperature of 158 °C and the pressure around the grill is 1.012 atm, what is the total new volume of the propane as it passes into the hot grill? (Show all work.)

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