Calculate the internal energy change in each of the following systems.
System II: No heat with surrounding but 25 KJ of work is done on the system.

Calculate the internal energy change in each of the following systems. System I: 10 kJ heat energy is released by the system to the surrounding but no work is done.

Express the change in internal energy of a system when (i) No heat is absorbed by the system from the surroundings, but work (w) is done on the system. What type of wall does the system have?

U_1 , q, w, U_2 are given. U_1 is internal energy, q is absorbed heat, w is work done and U_2 is final energy. a) Derive an equation for DeltaU. b) Give the equation for w. c) Calculate the change in internal energy of a system which absorbs 200 J of heat and 315 J of work is done by the system.

Internal energy U of a system may change when

Calculate the change in internal energy of a system which absorbs 100 J of heat and does 215 J of work.

Thermodynamics deals with energy changes of macroscopic system. State the first law thermodynamics?