Question

A balloon filled with 40 mol of He has a volume of 876 L at 0.08°C and 1 atm pressure. At constant
pressure the temperature of balloon is increased to 38.08°C causing the balloon to expand to a volume
998 L. Calculate q, w and AU for the process in balloon.

[Given : Cv.m for He= 3/2R]​

Answer 1

Answer:

A balloon filled with 39.1 moles of helium has a volume of 876 L at 0.0 ^\circ C0.0

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C and 1.00 atm pressure. At constant pressure, the temperature of the balloon is increased to38 ^\circ C,38°C, causing th e balloon to expand to a volume of 998 L. Calculate q, w, and \Delta EΔE for the helium in the balloon. (The molar heat capacity for helium gas is 20.8\ \mathrm { J } ^ { \circ } \mathrm { C } ^ { 1 } \mathrm { mol } ^ { - 1 }.)20.8 J°C 1mol−1

Ans.