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One kilogram of air expands at a constant temperature from a pressure of 850 kpa and a volume of 2.0 m3 to a pressure of

One kilogram of air expands at a constant temperature from a pressure of 850 kpa and a volume of 2.0 m3 to a pressure of 250 Kpa.

Determine;

a.the work

b.the heat

c.the change in internal energy

d.the change of enthalpy

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