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In an effort to stay awake for an all-night study
session, a student makes a cup of coffee by first
placing a 200 W electric immersion heater in
0.400 kg of water.
How much heat must be added to the water to raise its temperature from 21.0°C to 77.0°C?
Express your answer in joules.
IVE ΑΣΦ
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Part B
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How much time is required? Assume that all of the heater's power goes into heating the water.
Express your answer in seconds.
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15. ΑΣΦ
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Expert Solution

Step 1

Water molecules are moved further apart by the applied heat without increasing the temperature overall. As a result of the applied heat, the water molecules are separated further and further as the intermolecular bonds between them are broken.

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