You are hanging out with your friend Liz and decide to warm up some snacks for h

Question

You are hanging out with your friend Liz and decide to warm up some snacks for her and yourself in the microwave. Liz then tells you she doesn't microwave her food because she read in a magazine that microwave radiation is even more dangerous than being exposed to UV light because of the high levels of energy in microwave radiation. You disagree with your friend and determine the energy of both types of electromagnetic radiation to prove her wrong. Assume that microwaves have a frequency of approximately 2.5 times 10^9 Hz and that UV light has a frequency of approximately 8.0 times 10^15 Hz. Calculate the energy of one mole of photons of each type.

Explanation / Answer

E = n x h x v

where n = 1 mole photns = 6.023x10^23 , v - frequency , h = planks constant

for Microwave E = 6.023x10^23 x 6.625x10^ -34 x 2.5x10^ 9

          = 0.9976 J   = 1 Joule approximately

for UV region E = 6.023x10^23 x 6.625x10^ -34 x 8x10^5

            = 3192190 J

Thus energy of 1 moles of microwave region is very less compared to UV region rays

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