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# Entropy confusion watch

1. Hi I was wondering if someone could help me out with this question (it's on behalf of a friend).

The temperature inside the fridge is 2deg cel. its stands in a kitchen which is 22'C. in the course of an hour 95kJ of heat are transferrred from the interior of the fridge to the kitchen. As a result of this heat transfer what is the entropy change of the contents of the fridge and the kitchen assuming the heat transfer is reversible.
Thanks a lot for your help, I tried this myself and could not get anywhere!
2. Use

where = entropy change
= heat energy transferred (in joules)
= Temp of object (in this case the fridge) in Kelvin

This is valid for a reversible process occuring at constant temp.

Don't forget that in the question the info provided is actually as it tells us how much heat was transferred over one hour...
Use

where = entropy change
= heat energy transferred (in joules)
= Temp of object (in this case the fridge) in Kelvin

This is valid for a reversible process occuring at constant temp.

Don't forget that in the question the info provided is actually as it tells us how much heat was transferred over one hour...
Ah thanks a lot! Didn't notice that last point either, cheers

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