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8.81) How many moles of a gas will occupy a volume of 0.61 L at a...

8.81) How many moles of a gas will occupy a volume of 0.61 L at a temperature of 331 K and a pressure of 3.0 atm ?

8.112) Part A. When fully inflated, a hot-air balloon has a volume of 1.6×105L at an average temperature of 395 K and 0.967 atm . Assuming that air has an average molar mass of 29 g/mol, what is the density of the air in the hot-air balloon?

Part B) How does this compare with the density of air at STP? It's less dense than at STP. It's more dense than at STP.

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