if work is done by the system then W is

Fill in the blanks. a) If heat is released, 'q' is ………… b) For exothermic process 'DeltaH' is ………… c) If work is done on the system, 'w' is ………… d) For endothermic process 'DeltaH' is ………… e) If work is done by the system, 'w' is ............

When work (w) is done by the system, the sign of w is negative. But when it is done on the system, the sign of w is positive, give reason.

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 ? ii) No work is done on the system, but q amount of heat is taken out from the system and given to the surroundings. What type of wall does the system have? (iii) w amount of work is done by the system and q amount of heat is supplied to the system. What type of system would it be?

Express the change in internal energy of a system when 1) 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 ? ii) No work is done on the system, but a amount of heat is taken out from the system and given to the surroundings. What type of wall does the system have? iii) w amount of work is done by the system and q amount of heat is supplied to the system. What type of system would it be?

An amount of work w is done by the system and q amount of heat is supplied to the system. By which the following relations the change in internal energy of the system can be expressed-

Express the change in internal energy of a system when iii) w amount of work is done by the system and q amount of heat is supplied to the system. What type of system would it be?

Express the change in internal energy of a system when (iii) w amount of work is done by the system and q amount of heat is supplied to the system what type of system would it be?