Physics
The soft drink bottles are cooled by (i) ice cubes at 0° C, and (ii) iced-water at 0° C. Which will cool the drink quickly? Give reason.
Calorimetry
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Answer
Ice cubes at 0°C will cool the soft drink bottles more quickly than iced-water at 0°C.
1 g of ice at 0° C takes 336 J of heat energy from the drink to melt into water at 0° C. Thus, the drink liberates an additional 336 J of heat energy to 1 g ice at 0° C than to 1 g ice-cold water at 0° C. Therefore, cooling produced by 1 g ice at 0° C is much more than that by 1 g water at 0° C.
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