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How much work is done on the steam when 1.29 mol of water at 100 Celsius boils and becomes 1.29 mol of steam at 100 Celsius at 1.00 atm pressure? Assume the steam to behave as an ideal gas. Determine the change in internal energy of the system pf the water and steam as the water vaporizes.

(a) How much work is done on the steam when 1.29 mol of water at 100°C boils and becomes 1.29 mol of steam at 100°C at 1.00 atm pressure? (Assume the latent heat of vaporization of water is 2.26 x 10 J/kg.)
kJ
(b) Assume the steam to behave as an ideal gas. Determine the change i internal energy of the system of the water and steam as the water vaporizes.
kJ
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