7.5 Kj of heat is added to a closed system and its internal system decreases by 12kJ, then how much energy is transferred as work?

If 150 J of heat is added to a system and the work done by the system is 110 j. then change in internal energy wil be

If 150 J of heat is added to a system and the work done by the system is 110 j. then change in internal energy wil be

110 J of heat is added to a gaseous system, whose internal energy change is 40 j. then the amount of external work done is

110 J of heat is added to a gaseous system, whose internal energy change is 40J. Then the amount of external work done is

The heat of 100 J is added to a gaseous system whose internal energy is 40 J, then the amount of external work done will be

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?

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?

In a particular reaction 2kJ of heat is released from the system and 8kJ of work is done on the system. What are changes in internal energy and enthalpy of system?

Assign the proper sign to q and w in the following cases : 15 kJ of energy is transferred to the system by doing work on it.