The amount of heat absorbed when a substance melts ………

The amount of heat absorbed to change a substance from liquid to vapour …………..

The amount of heat released when a substance changes from gas to liquid ……………

The amount of heat absorbed or released when a unit mass changes its state ……….

A substance is in the solid from at 0^(@)C . The amount of heat added to this substance and its temperature is plotted in the graph . The specific heat capacity of the solid substance is 0.5 "cal"//"g"^(@)C . Latest heat capacity in melting process is -

A substance is in the solid form at 0^@ C. The amount of heat added to this substance and its temperature are plotted in the following graph. If the relative specific heat capacity of the solid substance is 0.5, find from the graph (i) the mass of the substance, (ii) the specific latent heat of the melting process and (ii) the specific heat of the substance in the liquid state. Specific heat capacity of water =1000 cal//kg//K

A substance is in the solid from at 0^(@)C . The amount of heat added to this substance and its temperature is plotted in the graph . The specific heat capacity of the solid substance is 0.5 "cal"//"g"^(@)C . Specific heat capacity in the liquid state is -

A substance is in the solid from at 0^(@)C . The amount of heat added to this substance and its temperature is plotted in the graph . The specific heat capacity of the solid substance is 0.5 "cal//g"^(@)C . The mass of the substance is -

550 kJ "cycle" ^(-1) work is done by 1 mol of an ideal gas in a cyclic process. The amount of heat absorbed by the system in one cycle is

The amount of heat absorbed to change 1 kg of water to vapour ……….

Heat of combustion is the amount of heat evolved when the number of moles as represented by the balanced equation have been completely oxidised.