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What minimum heat is needed to bring 250g of water at 50?C to the boiling point...

What minimum heat is needed to bring 250g of water at 50?C to the boiling point and completely boil it away? The specific heat of water is 4190 J/(kg?K) and its heat of vaporization is 22.6

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Answer #1

from 50 to 100
= m c dT = .25*50*4186 = 52325 j

for boil out = Lv . m
= 22.6*10^5 *0.25
=565000

total = sum of both = 6.17*10^5 j

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