gah. help??How much heat must be lost to move H2O from 18 to 0 degrees C?
mass x specific heat x delta T =
100g x 4.186 J/g*C x 18 = ??
How much heat must bae lost to freeze the water?
100g x 334 J/g = ??
Total heat that must be lost (pulled out of the water) is the sum of the two.
How much heat can the CCl2F2 remove?
mass x 289 J/g = ??
Can you take it from here?
This question was asked on May 04, 2010.
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