document.write( "Question 178763: which would require more heat melting 500g of 0c ice or turning 500g of 100c water into steam \n" ); document.write( "

Algebra.Com's Answer #133739 by Fombitz(32388) $\"\"$ $\"About$

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To do this calculation you need two additional constants, the heat of fusion and the heat of vaporization. \r
\n" ); document.write( "\n" ); document.write( "The heat of fusion is the amount of energy required to go from solid to liquid (333.6 J/g for water).
\n" ); document.write( "The heat of vaporization is the amount of energy required to go from liquid to gas (2257 J/g for water).
\n" ); document.write( "As you can see it takes about 7 times more energy to vaporize water than to melt the equivalent amount of ice.
\n" ); document.write( " $\"H%5Bf%5D=%28333.6%29%28500%29=166800\"$
\n" ); document.write( "The heat of fusion for 500g of water is 166.8 KJ.
\n" ); document.write( " $\"H%5Bv%5D=%282257%29%28500%29=1128500\"$
\n" ); document.write( "The heat of vaporization for 500g of water is 1129 KJ.
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