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An unknown element has two naturally occurring isotopes. Isotope #1 has a mass of 113 amu and a natural abundance of
4.3%. Isotope #2 has a mass of 115 amu and a natural abundance of 95.7%.
4. Calculate the average atomic mass of this mystery element

Round answer to 5 sig figs. Remember units!
5. Look at the periodic table, which element is most likely to be the mystery element?

An Unknown Element Has Two Naturally Occurring Isotopes Isotope 1 Has A Mass Of 113 Amu And A Natural Abundance Of 43 Isotope 2 Has A Mass Of 115 Amu And A Natu class=