# Answer on Molecular Physics | Thermodynamics Question for Christbeauty

Question #58127

13 A 0.5kg piece of metal (c = 600/kgK) at 300 degree celcius is dumped into a large pool of water at 20 degrees celcius. Assuming the change in temperature of water to be negligible, calculate the overall change in entropy for the system

85.5J/K

67.4J/K

122.3J/K

202.3J/K

14 Calculate how much heat is needed to be supplied to a gas at a pressure of

1.25×105Pa

, such that the pressure increases by 25 per cent at constant volume, and the internal energy by 120J.

240J

120J

320J

480J

85.5J/K

67.4J/K

122.3J/K

202.3J/K

14 Calculate how much heat is needed to be supplied to a gas at a pressure of

1.25×105Pa

, such that the pressure increases by 25 per cent at constant volume, and the internal energy by 120J.

240J

120J

320J

480J

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