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October 26, 2014

Homework Help: AP Chemistry

Posted by qwerty123 on Tuesday, November 16, 2010 at 11:21pm.

Microwave ovens emit microwave radiation that is absorbed by water as heat. Suppose that the wavelength of the radiation that is 12.5 cm in an oven that has a power rating of 900 watts. (1W = 1 J/s)
a) How many moles of photons are released per minute
b) how long will it take to heat 100m.L of water from 20 Celsius to 100 Celsius. Assume all the water gets all of the microwaves energy as heat.

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