The molar heats of fusion of water and iodine are 6.02 kJ/mol and 16.7 kJ/mol, respectively, it will take more energy to melt a gram of ice than to melta gram of solid iodine.
a. True
b. FalseTrue or False. Molar heats of fusion?
Atomic weights: H=1 O=16 H2O=18 I=127 I2=254
1gH2O x 1molH2O/18gH2O x 6.02kJ/1molH2O = 0.334 kJ
1gI2 x 1molI2/254gI2 x 16.7kJ/1molI2 = 0.0657 kJ
So true: It will take more energy to melt a g of H2O than a g of I2.
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