YayaM9411 YayaM9411

28-05-2021
Chemistry

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calculate the atomic mass of gallium if gallium has two naturally occurring isotopes with the following massess and natural abundances Ga-69 68.9256 amu 60.11% Ga-71 70.9247 amu 39.89

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tutorAnne tutorAnne

29-05-2021

Answer: Atomic mass of gallium = 69.72304093 amu

Explanation:

We calculate the atomic mass of Gallium by using the Relative abundance of the isotopes.

Atomic mass =mass x Natural Abundance of Isotope 1 +mass x Natural Abundance of Isotope 2

(60.11/100 x 68.9256) + (39.89/100 x 70.9247)

= 41.43117816 + 28.29186283 = 69.72304093 amu

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