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One-half kilogram of air is compressed isothermally and qusistatically in a closed system from 100 kPa...

One-half kilogram of air is compressed isothermally and qusistatically in a closed system from 100 kPa gage pressure and 30C to a final gage pressure of 240 kPa. Determine (a) the internal energy change and (b) the heat transfer and its direction, in kJ?

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