Calculate how much energy (J) is required to heat up a pot containing 500. g of water from 23.0 °C to its boiling point of 100.0 °C (specific heat of water = 4.184 J/g°C).

1. In general, the internal energy U depends on both temperature and volume, U=U(TV). The volume dependence comes from the potential energy due to the interactions among the particles. For free particles, there are no interactions, thus, the internal energy U should be independent of the volume, i.e., = 0. Verify this result for ideal gas pV = RT. au av

10.0 mol of argon (monoatomic) gas is introduced to an empty 50-cm^3 container at 20° C. The gas than undergoes an isobaric heating to a temperature of 300° C.  a) what is the pressure at which this process happens? b) what is the final volume of gas? c) show this process of a PV diagram. Make sure you include units and properly label axes. d) what is the amount of work done during this process? Is this work done on the gas or by the gas? e) how much he is involved in this process? is the heat going in or out of the system?

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