What is the volume of gas inside this balloon?

Question

A balloon is floating around outside your window. The temperature outside is 39°C, and the air pressure is 0.700 atm. Your neighbor, who released the balloon, tells you that he filled it with 3.30 moles of gas

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Answer 1 · 2016-08-13T07:27:53

#V=(nRT)/P~=120*L#

#V=(3.30*molxx0.0821*L*atm*K^-1*mol^-1xx312*K)/(0.700*atm)=??L#

Would the gas inside the balloon be normal air, or something else? How could you tell?