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Three isotopes of argon occur in nature – 36Ar, 38Ar, 40Ar. Calculate the average
atomic mass of argon to two decimal places, given the following relative atomic masses and the abundances of each of the isotopes: argon- 36 (35.97 amu; 0.337%), argon-38 (37.96 amu; 0.063%), argon-40 (39.96 amu; 99.600%)