Heat is supplied to a system, but its internal energy does not increase Which process is the involved in this case?

Heat is supplied to a system, but its internal energy does not increase Obtain an expression for the work done in the above process.

Internal energy U of a system may change when

Which of the following process does not involve a catalyst?

DeltaU=q-pDeltaV. If the process is carried out at constant volume, then DeltaV=0. Answer the following questions. a) Give the equation for DeltaU. b) 1000J was supplied to a system at constant volume. It resulted in the increase of temperature of the system from 45^oC to 50^oC. Calculate the change in internal energy.