Hv of water = 2256 j/g
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Assuming from the lack of other information,
the problem should have worded something like
"How much heat is needed to change 400.0g of water at 100° to steam at 100°"
To solve that problem, simply multiply:
400.0g x 2256J/g = 9,024E5J = 902.4kJ.
the problem should have worded something like
"How much heat is needed to change 400.0g of water at 100° to steam at 100°"
To solve that problem, simply multiply:
400.0g x 2256J/g = 9,024E5J = 902.4kJ.
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902.4 kJ is equivalent to 902,400 J. *facepalm*
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