There are three naturally occurring isotopes of magnesium: 24
12Mg, 25
12Mg, and 26
12Mg. In
a weird parallel universe, the percentages of
these isotopes are
Magnesium Natural
Isotopes Abundance
24
12Mg / 43.1%
25
12Mg / 19%
26
12Mg / 37.9%

You can assume the masses are equal to the
mass number. Calculate the weight of “naturally” occurring magnesium in this weird
parallel universe.
Answer in units of g/mol. Your answer
must be within ± 0.015%