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Anonymous asked in Science & MathematicsChemistry · 5 months ago

Wavelength/Photon Chemistry Question?

Assuming you could heat up water with X-rays instead of microwaves, how manyphotons of X-ray radiation with wavelength (A) of 5.61 x 1 o-9 m will be needed to causethe same amount of heat increase as 1. 7 4 x 1028 of photons of microwave radiation withwavelength of 0.112 m?

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  • 5 months ago

    E = h*nu = hc/lambda.

    That is to say, energy varies inversely with wavelength. Therefore,

    ( X )/5.61 * 10^(-9) m = (1.74 x 10^28)/(0.112 m), so

    X = about 8.7 x 10^20 (number of Xray photons)

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