`Delta U` for a system that does 1000 cal of work on the surroundings when 200 cal of heat are absorbed by the system is ______ .

What is DeltaE for system that does 500 cal of work on surrounding and 300 cal of heat is absorbed by the system ?

What is DeltaE for system that does 500 cal of work on surrounding and 300 cal of heat is absorbed by the system ?

If 500 calorie of heat energy are added to a system and the system does 350 calorie of work on the surroundings, what is the energy change of the system?

For a closed system, determine the change in internal energy (DeltaU) when (a) q cal of heat is absorbed by the system and w cal of work is performed on the system (b) q cal of heat is absorbed by the system and w cal of work is performed by the system (c) q cal of heat is evolved by the system and w cal of work is performed on the system (d) heat is not absorbed or evolved by the system, but w cal of work is performed by the system.

Delta U= + 200 J for a system that gives off 200 J of heat and

If "10" calorie of heat energy is added to a system and the system does "5" calorie of work on the surroundings,What is the energy change of the system?

A system is taken from state a to state c along the path adc (figure). The amount of heat absorbed is 10 cals and work done on the gas is 138 J . Calculate the work done on//by the gas when 20 cals of heat are absorbed in taking the system from state a to state c along the path abc

If 2500 cal of heat is added to a system while the system does work equivalent to 3500 cal by expanding against the surrounding atmosphere, the value of Delta U for the system is ________ .