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What is the minimum amount of heat, in Joules, needed to fully convert a 1-kg block...

What is the minimum amount of heat, in Joules, needed to fully convert a 1-kg block of ice at 250 K to steam?
cice = 2090 J/kg-°C , cwater = 4186 J/kg-°C , csteam = 2010 J/kg-°C, Lfushion-water 3.33x105 J/kg, Lvaporization-water = 2.26x106 J/kg

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