15.1 Part A An ideal gas expands isothermally, performing 2.70×103 J of work in the process. Subpart 1 Calculate the cha

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15.1
Part A
An ideal gas expands isothermally, performing
2.70×103 J of work in the process.
Subpart 1
Calculate the change in internal energy of the
gas.
Express your answer with the appropriate
units.
ΔU =
Subpart 2
Calculate the heat absorbed during this
expansion.
Express your answer with the appropriate
units.
Q =
Part B
A gas is enclosed in a cylinder fitted with a light
frictionless piston and maintained at atmospheric pressure. When
254 kcal of heat is added to the gas, the volume is observed
to increase slowly from 12.0 m3 to
16.2 m3
Subpart 1
Calculate the work done by the
gas.
Express your answer with the appropriate
units.
W =
Subpart 2
Calculate the change in internal energy of the
gas.
Express your answer with the appropriate
units.
ΔU =