(Solved): 1. Atomic Mass (amu) 2. D Estimate the approximate weight of each and then complete the calculation ...

1. Atomic Mass (amu) 2. D Estimate the approximate weight of each and then complete the calculations for avg atomic mass. (note that $\#3$ is not to scale. Just use the relative abundance given on the $y$-axis as your values) You can ignore the trace amounts for isotope $\$84$ in $\$2$. 1. 2. 3. II. calculate the average atomic mass and identify the element for the following: 1. Calculate the average atomic mass for the following element given information about the relevant isotop (Isotope 1) Mass $=20.00\mathrm{amu}$; Isotopic abundance $=90.92\%$ (Isotope 2) Mass $=21.00\mathrm{amu}$; Isotopic abundance $=0.257\%$ (Isotope 3) Mass $=22.00\mathrm{amu};$ Isotopic abundance $=8.82\%$ Ans. Looking at the periodic table, which element is this most likely? 2. What is the atomic mass of an element with 3 isotopes with the following information: Isotope I- 42 amu ( $75\%$ abundance) Isotope 2 - 44 amu ( $10\%$ abundance) Isotope $3?45$ amu $\%$ abundance) Ans.