Q. Water is boiled at 1 atm pressure in a coffee maker equipped with an immersion type electric heating element. The coffee maker initially contains 1kg of water. Once boiling started, it is observed that half of the water in the coffee maker evaporated in 25 minutes. If the heat loss from the coffee maker is negligible, the power rating of the heating element is :(adsbygoogle = window.adsbygoogle || []).push({});

Is there a formula to find this.

I can't find any formula, or any problem close to this one in my text book.

Any insights on how to get started.

Something to do with ideal gas law, may be:

PV = nRT

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# Homework Help: Fundamentals of Engineering Problem

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