Two moles of helium are initially at a temperature of 26.0 ∘C∘C and occupy a volume of 3.40×10−2 m3m3 . The helium first

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Two moles of helium are initially at a temperature of
26.0 ∘C∘C and occupy a volume of
3.40×10−2 m3m3 . The helium first expands at
constant pressure until its volume has doubled. Then it expands
adiabatically until the temperature returns to its initial value.
Assume that the helium can be treated as an ideal gas.
1What is the total heat supplied to the helium in the
process?
2What is the total change in internal energy of the helium?
3What is the total work done by the helium?
4What is the final volume of the helium?