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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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gorgeous gorgeous
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4 years ago
> Ice bag therapy is used by sports trainers to treat muscle injuries. If 260. g of ice are placed in an ice bag, how much heat, in joules, will be absorbed to melt all the ice at 0 °C?

> In a freezer, 150 g of water at 0 °C is placed in an ice cube tray. How much heat, in kilocalories, must be removed to form ice cubes at 0 °C?
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#1
Staff Member
4 years ago
1)
given: 260g of ice at 0oC
heat of fusion = 334 J/g

need: joules to melt ice at 0oC

1 g of H2O (s -->l) = 334J

260 g H2O x  (334J/ 1 g H2O) = 86 800J or 8.68 x 104 J


2) Answer: 12Kcal
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