How much heat must be added to 65 g of water at an initial temperature of 52°C to do the following?
How much heat must be added to 65 g of water at an initial temperature of 52°C to do the following?
(a) heat it to the boiling point
(b) to completely convert the 100°C water to steam
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a) q = mCp(dT) = 60*4.2*(48) = 12100 J
b) Q = m(hg - hf) ===> from steam tables
Q = 60*(2676 - 419) = 135420 J
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