Posted by Mary on Monday, April 26, 2010 at 7:56pm.
A cup of chicken soup (500.0 g) is heated from 20ºC to 98ºC in a microwave oven that operates at wavelength = 1.55 x 10–2 m. How many moles of photons are absorbed by the soup? Assume that the specific heat capacity of chicken soup is equal to that of water.

Chemistry  DrBob222, Monday, April 26, 2010 at 8:25pm
q = mass water x specific heat water x delta T = ?? Joules.
E = hc/wavelength.
Substitute h, c, and wavelength to calculate E (in joules/photon)
Convert to # photons, then divide by 6.022 x 10^23 to convert # photons to moles photons.
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