Homework Help: GenChemistry

Posted by Jake on Wednesday, December 8, 2010 at 5:15pm.

Exposure to high doses of microwaves can cause tissue damage. Estimate how many photons with a wavelength = 12cm, must be absorbed to raise the temperature of your eye by 3.0 deg C. Assume the mass of the eye is 11g and its specific heat is 4.0 J/gK

GenChemistry - DrBob222, Wednesday, December 8, 2010 at 5:18pm
How much heat energy is needed to raise the T of the eye?
q(in joules) = mass x specific heat x delta T.

How much energy does each photon have?
E(in joules) = hc/wavelength

E/photon x # photons = q
Solve for # photons.

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