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August 22, 2014

Homework Help: college-- chemistry

Posted by shylo on Sunday, February 15, 2009 at 2:12am.

I am having a problem with this problem from my homework. I need some help on this problem.

Microwave ovens work by irradiating food with microwave radiation, which is absorbed and converted into heat. Assume radiation with wavelength=15.0cm is used and that all the energy is converted to heat. How many photons are necessary to raise the temperature of a 350mL quantity of water from 20.0 degree C to 95.0 degree C?

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