Question #5. Percentage Abundance. The element rubidium consists of two isotopes, one having an isotopic mass of 84.912 and the other having an isotopic mass of 86.920. Determine the percentage abundance of the lighter isotope. Record your answer, to the correct number of significant figures, in the box below; do not include the units of your final answer. Then show your numerical set-up(s) in the next question.

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Introduction to chemistry

Chemistry is a branch of science that deals with the analysis of material and the substances that comprise it. It also manages the properties of these substances and their reactions to form new substances. It is basically centered on particles and atoms that make up components and mixtures. These chemical species will in general connect using bonds.