Some imaginary element Im has two naturally occurring isotopes, Im-54 (53.826 amu) and Im-58 (58.055 amu). If the average atomic mass of Im is 56.155 amu, then the Im- % of the total. Type your answer rounded to the 3rd 54 isotope must constitute decimal place (i.e. the thousandths place, NN.NNN) without units or a percent sign.

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Photochemistry

Photochemistry is the part of chemistry that studies the various mechanisms of reactions that are triggered by the presence of light energy. It also helps to study the changes involved in a molecule that can undergo the absorption of radiation.