A 1.00 mole of helium gas is held P (atm) at a constant pressure of 1 atm and contracts from an initial volume of 50 liters to a final volume of 10 liters shown with points B and C in the Figure. This is an example of an isobaric process. a) How much work, W, does the gas do as it contracts? b) What is the change in the (internal) energy, U, of the gas? c) How much heat, Q, has been transferred to the gas during this process? 5 C 10 d) Verify that the 1st law of thermodynamics is satisfied. 1 atm=1.01x105 N/m², 1 liter=0.001 m³, NA-6.02x1023 mol¹, ks=1.38x10 23 J/K. B 50 V (liters)

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A 1.00 mole of helium gas is held P (atm)
at a constant pressure of 1 atm and contracts
from an initial volume of 50 liters to a final
volume of 10 liters shown with points B and C
in the Figure. This is an example of an isobaric
process.
a) How much work, W, does the gas
do as it contracts?
b) What is the change in the (internal)
energy, U, of the gas?
c) How much heat, Q, has been
transferred to the gas during this process?
5
C
10
d) Verify that the 1st law of thermodynamics is satisfied.
1 atm=1.01x105 N/m², 1 liter=0.001 m³, NA-6.02x1023 mol¹, ks=1.38x10 23 J/K.
B
50
V (liters)
Transcribed Image Text:A 1.00 mole of helium gas is held P (atm) at a constant pressure of 1 atm and contracts from an initial volume of 50 liters to a final volume of 10 liters shown with points B and C in the Figure. This is an example of an isobaric process. a) How much work, W, does the gas do as it contracts? b) What is the change in the (internal) energy, U, of the gas? c) How much heat, Q, has been transferred to the gas during this process? 5 C 10 d) Verify that the 1st law of thermodynamics is satisfied. 1 atm=1.01x105 N/m², 1 liter=0.001 m³, NA-6.02x1023 mol¹, ks=1.38x10 23 J/K. B 50 V (liters)
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