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07-01-2024
Chemistry

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Solvent vs solute: An unknown element is a mixture of isotopes ¹²⁰X and ¹²²X. The average atomic mass of X is 120.92 amu. What is the percent abundance of ¹²²X?

a) 80.5%
b) 19.5%
c) 42.8%
d) 57.2%

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