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July 25, 2014

Homework Help: Chemistry

Posted by Sarah on Monday, January 23, 2012 at 11:46pm.

A certain microwave oven delivers 633 watts (J/s) of power to a coffee cup containing 53.1 g of water at 25C. If the wavelength of microwaves in the oven is 9.75 cm, how long does it take, and how many photons must be absorbed, to make the water boil? The specific heat capacity of water is 4.18 J/Cg. Assume only the water absorbs the energy of the microwave.
___________ s
____________ photons

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