1.

The (i)_____of a syste can be changed by transfer of heat from the surrounding to the system of cive-verse without expenditure of (ii)_____. Identify (i) and (ii) in order to complete the above statement.

Answer»

(i)-ENTHALPY, (ii)-WORK
(i)-internal energy, (ii) heat
(i)-enthalpy, (ii)- heat
(i)-internal energy, (ii)-work

Solution :The internal energy of a system can be changed by transfer of heat from the SURROUNDINGS to the system or vice-versa WIHTOUT expenditure of work.


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