SAT, 04.02.2022 08:30 fanofhope31

An unknown element is a mixture of isotopes ¹²⁰x and ¹²²x. The average atomic mass of x is 121. 47 amu. What is the percent abundance of ¹²²x?.

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An unknown element is a mixture of isotopes ¹²⁰x and ¹²²x. The average atomic mass of x is 121. 47 a...

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