Question

What is the relative atomic mass of a hypothetical element that consists of the following isotopes in the indicated natural abundances?

Answer 1

96.1amu

Step-by-step explanation:

Given isotopes : 94.9amu with 12.4%, 95.9 amu with 73.6% and 97.9 amu with 14% natural abundances.

Taking the average weight of the isotopes as follows

(94.9x0.124) + (95.9 x 0.736) + (97.9x0.14) = 96.1amu