Question

There are three naturally occurring isotopes
of the hypothetical element hilarium 44Hi,
45Hi, and 47Hi. The percentages of these
isotopes are the following:
Hilarium Natural
Isotopes Abundance
44Hi 29.3%
45Hi 35.9%
47Hi 34.8%
You can assume that the atomic masses are
exactly equal to the mass number. Calculate
the weight of “naturally” occurring hilarium
and report it as you would for any other naturally occurring element.
Answer in units of g/mol Your answer must
be within ± 0.005%