Question

An element has three naturally occurring isotopes. Use the information below to calculate the weighted average atomic mass of the element, showing both the setup and the final answer for the calculation.
average atomic mass of element = 1.01 (99.984 / 100)
2.01 (0.014/100) + 3.02 (0.002/100) = 1.01 u

Answer 1

1.01 (99.984 / 100)
2.01 (0.014/100)
3.02 (0.002/100

how do i calculate ?

Answer 2

average atomic mass of the element= 1.01(0.99984) + 2.01(0.00014) + 3.02(0.00002) = 1.01 u

Answer 3

That looks right.