I've done the problem and come up with 777 kj. The bok says 732 kj...hmmmm.... your thoughts?
How much energy in joules is required to warm 225 g of ice from -46.8 to 0.0 deg C, melt the ice, warm the water form 0.0 to 100.0 deg C, boil the water, and heat the steam from 100.0 to 173.0 deg C?
Ref info: delta Hfusion = 6.01 kj/mole, delta H vap = 40.7 kj/mole, spht of ice = 2.03 j/g deg C, spht of liq water = 4.184 j/g deg C, spht of steam = 2.01 j/g deg C
heating to 0 deg C = 21.4 kj
melting: 75.0 kj
heating to 100 = 94.1 kj
vaporizing = 508 kj
heating to 173 = 78.2 kj
Where did I go wrong????