When 1 gm of water changes from liquid to vapour phase at constant pressure of 1 atmosphere, thevolume increases from 1cc to 1671cc. The heat of vaporisation at this pressure is 540 cal/gm. Increase in internal energy of water is

When 1 gm of water changes from liquid to vapour phase at constant pre

1.	When 1 gm of water changes from liquid to vapour phase at constant pressure of 1 atmosphere, thevolume increases from 1cc to 1671cc. The heat of vaporisation at this pressure is 540 cal/gm. Increase in internal energy of water is
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