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**1. Homework Statement**

How much energy does it take to transform 500 g (0.5kg) of liquid water at 20 oC to steam at 100 oC? Note that the specific heat capacity of liquid water is 4.28x10^3 J/Kg/oC and the latent heat of vaporization for water is 2.3x10^6 J/Kg.

**2. Homework Equations**

Eh=mct ; m1c1t1=-m2c2t2 ; Eh = mLf ; Eh= mLv

**3. The Attempt at a Solution**

no clue..please help..