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Question

The element magnesium consists of three naturally occuring isotopes with masses 23.98504, 24.98584, and 25.98259 amu. The relative abundances of these three isotopes are 78.70,10.13, and 11.17 percent, respectively. From these data calculate the average atomic mass of magnesium.

Very much appreciated

10 points

Answer 1

(23.98504)(0.7870) + (24.98584)(0.1013) + (25.98259)(0.1117) = the answer you seek.