Asked by I
The balloon contains 0.30 mol of helium starts at a pressure of 125 kpa and rises to an altitude where the pressure is 55.0 kpa, maintaining a constant 300 {\rm K} temperature.
A)By what factor does its volume increase?
B)How much work does the gas in the balloon do?
A)By what factor does its volume increase?
B)How much work does the gas in the balloon do?
Answers
Answered by
Elena
p1•V1/T1 = p2•V2/T2á
T1 =T2á
V2/V1=p1/p2=125/55 =2.27þ
W =ν•R•T•ln(V2/V1) = =0.3•8.31•300•ln2.27=614 J.
T1 =T2á
V2/V1=p1/p2=125/55 =2.27þ
W =ν•R•T•ln(V2/V1) = =0.3•8.31•300•ln2.27=614 J.
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