Question

An imaginary element Z has two naturally occurring isotopes, ^3Z and ^4z. ^3Z has a mass of 3.016 amu, and ^4Z has a mass of 4.003 amu.

Answer 1

$\begin{gathered} ^4Z\text{ mass=}4.003\text{ amu} \\ Z\text{ mass= }3.878\text{ amu} \\ percent\text{ }abundance\text{ =}\frac{^4Z\text{ mass}}{Z\text{ mass}}x100 \\ percent\text{ }abundance\text{ =}\frac{4.003\text{ amu}}{3.878\text{ amu}}x100 \\ percent\text{ }abundance\text{ =}103.223\text{ \%} \\ The\text{ percent abundance of }^4Z\text{ is }103.223\text{ \%} \end{gathered}$