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Water of mass m = 1.00 kg is heated from...

Water of mass `m = 1.00 kg` is heated from the temperature `t_1 = 10^@C` up to `t_2 = 100 ^@C` at which it evaporated completely. Find the entropy increment of the system.

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`Delta S = int _(T_1)^(T_2) mc (dT)/(T) + (mq)/(T_2) ~= m (c 1n (T_2)/(T_1)+(q)/(T_2))`
=`10^3(4.18 1n (373)/(283) + (2250)/(373)) ~~ 7.2 kJ//K`.
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