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4. Atoms and Elements - Part 1 of 2

4. Atoms and Elements / Atomic Mass (Simplified) / Problem 15

Problem 15

Given isotopic masses of 12 AMU, 13 AMU, and 14 AMU with percent abundances of 70%, 20%, and 10%, respectively, calculate the atomic mass of the element.

A

12.4 AMU

B

12.7 AMU

C

13.4 AMU

D

13.0 AMU