Question 67
HardOriginal questionIce at 0 °C cools a drink more than the same mass of water at 0 °C does. Why?
Show the answer and explanation
CorrectNot quiteAnswer B
Correct answer: B
Explanation
To melt, each gram of ice takes about 334 J from its surroundings while staying at 0 °C.
Water at 0 °C has no such store to take in; it only warms up. So ice removes much more heat from the drink.
Worth noting
The ice in the question is at 0 °C, the same as the water; the difference is the heat needed for melting.
- Concept
- Latent heat of fusion
- Typical timeTypical
- 90 s
- Your timeYours
- —
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