Fox is at a party store getting balloons for his birthday. The attendant has Helium on...

 

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Fox is at a party store getting balloons for his birthday. The attendant has Helium on tap in a metal canister. The canister has a volume of 8.0 m and is originally at a pressure of 2.20 x 105 Pa. The attendant uses 30 moles of Helium to fill 36 balloons. While filling the balloons, the air, canister, and balloons are all at room temperature, T-20 C. (a) What is the pressure of the Helium in the canister after filling the balloons? (b) What is the volume of each balloon? You can assume that the air inside the balloons are at atmospheric pressure, 1.01 x 105 Pa. (c) When Fox leaves the store, he steps outside into a chilly day. The cold weather draws heat from the balloons until the temperature of the air inside the balloons is 15 C and they have shrunk somewhat. How much work is done by the surroundings to compress a single balloon? (d) How much heat has left each balloon? (Note: Helium is monatomic.) (e) What is the change in internal energy of a single balloon? Fox is at a party store getting balloons for his birthday. The attendant has Helium on tap in a metal canister. The canister has a volume of 8.0 m and is originally at a pressure of 2.20 x 105 Pa. The attendant uses 30 moles of Helium to fill 36 balloons. While filling the balloons, the air, canister, and balloons are all at room temperature, T-20 C. (a) What is the pressure of the Helium in the canister after filling the balloons? (b) What is the volume of each balloon? You can assume that the air inside the balloons are at atmospheric pressure, 1.01 x 105 Pa. (c) When Fox leaves the store, he steps outside into a chilly day. The cold weather draws heat from the balloons until the temperature of the air inside the balloons is 15 C and they have shrunk somewhat. How much work is done by the surroundings to compress a single balloon? (d) How much heat has left each balloon? (Note: Helium is monatomic.) (e) What is the change in internal energy of a single balloon?