Question: An element has two stable isotopes. Isotope 1 has a mass of 68.912, Isotope 2 has a mass of 70.814. The atomic weight of the

An element has two stable isotopes. Isotope 1 has a mass of 68.912, Isotope 2 has a mass of 70.814. The atomic weight of the element is 69.965. What is the abundance of isotope 1 (Abundance is 0 up to 1 ) Report to 3 significant figures. Do not round until the end, this question requires and exact

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