Calculate the Average Atomic Mass
- Calculate the average atomic mass of an element with two naturally occurring isotopes: 85X (72.15%, 84.9118 amu) and 87X (27.85%, 86.9092 amu). What is this element?
- Chromium has the following isotopic masses and relative abundances. Calculate the average atomic mass of chromium to two decimal places.
|Mass Number||Iostopic Mass (amu)||Percent Abundance|
[Want more practice problems? Check out Atomic Mass Practice Problems Part II.]