Chemistry, 24.01.2021 01:00 Jspice1996

I Need help ASAP An unknown element is a mixture of isotopes ¹²⁰X and ¹²²X. The average atomic mass of X is 120.59 amu. What is the percent abundance of ¹²²X?

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I Need help ASAP An unknown element is a mixture of isotopes ¹²⁰X and ¹²²X. The average atomic mass...