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2. Calculate the atomic weight for the following elements: a. b. Isotope Cu Cu Isotope 85 87 37Rb Isotope 24Mg 12 25 Mg 12 26Mg

2. Calculate the atomic weight for the following elements: a. b. Isotope Cu Cu Isotope 85 87 37Rb Isotope 24Mg 12 25 Mg 12 26Mg 12 Atomic Mass (amu) 62.9296 64.9278 Atomic Mass (amu) 84.9118 86.9092 Atomic Mass (amu) 23.98504 24.98584 25.98259 Percent Abundance (%) 69.17 30.83 Percent Abundance (%) 72.15 27.85 Percent Abundance (%) 78.99 10.00 11.01

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