If 2 kcal, of heat is supplied to a system cause to change the internal energy of a gas is 5030 J, and external work done is 3350 J, then what is mechanical equivalent of heat?
41.90 J/kcal
4190 J/cal
4.19 J/kcal
4.19 J/cal
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The average kinetic energy of the molecules of a gas at 27°C is 9 × 10–20 J. what is its average K.E. at 227°C?