Friday
April 18, 2014

Homework Help: Chemistry!

Posted by Alex on Sunday, November 14, 2010 at 4:54pm.

Hey jiskha.

Microwave ovens emit microwave radiation that is absorbed by water. The absorbed radiation is converted to heat that is transferred to other components of the food. Suppose that the microwave radiation has a wavelength of 12.7 cm. How many photons are required to heat 200. mL of coffee from 21C to 63C?

I have no clue where to start.

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