Posted by Carolyn on Saturday, June 11, 2011 at 4:15pm.
Determine the energy in K calories needed to convert a one pound block of ice to steam

Chemistry  DrBob222, Saturday, June 11, 2011 at 4:57pm
Is the block of ice at zero C? If so, Convert 1 pound ice to grams, then
q1 = heat to melt ice to liquid.
q1 = mass ice x heat fusion(in cal).
q2 = heat to raise T of water (melted ice) to 100 C.
q2 = grams x spcific heat(in cal) x (TfinalTintial)
q3 = heat to convert liquid water at 100C to steam at 100 C.
q3 = mass water x heat vaporication.
Total Q = q1 + q2 + q3.
Then convert calories to kilocalories.
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