Three isotopes of argon occur in nature 18 36 Ar, 18 38
Chapter 3, Problem 19(choose chapter or problem)
Three isotopes of argon occur in nature 18 36 Ar, 18 38 Ar, and 18 40 Ar. Calculate the average atomic mass of argon to two decimal places, given the following relative atomic masses and abundances of each of the isotopes: argon-36 (35.97 u; 0.337%), argon-38 (37.96 u; 0.063%), and argon-40 (39.96 u; 99.600%). 2
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