45. 5 moles of oxygen is heated at constant volume from 10°C to 20°C. The change in the internal energy of the gas is (the gram molecular specific heat of oxygen at constant pressure, Cp=8 cal/mole °C and R = 8.3 cal/mole °C)
(a) 200 cal (b) 300 cal
(c) 100 cal (d) None of these
Answer-b
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a