Chemistry, 02.11.2020 23:10, aa1317aa

An unknown element is a mixture of isotopes ¹⁵¹X and ¹⁵³X. The average atomic mass of X is 151.69 amu. What is the percent abundance of ¹⁵³X? Please provide an explanation with the answer :)
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An unknown element is a mixture of isotopes ¹⁵¹X and ¹⁵³X. The average atomic mass of X is 151.69 am...