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Mole Calculations

Calculation of Ar based on Isotopic Abundance – Challenging Question

May 12, 2010 By Sean Chua 2 Comments

In the previous blogpost, we have discussed on the Calculation of Ar based on Isotopic Abundance.

Today, we will look at a more challenging question related to it.

I would love to see you attempting the question and leaving your suggested answer in the comments section below.

Question:

Naturally occurring gallium, Ga, is a mixture of two isotopes of mass numbers 69 and 71. What is the percentage abundance of each isotope? Ar of gallium is given as 69.7.

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