Answer
hydrogen sulfide will have the largest number of moles of atoms per $100$ grams compared to the other compounds.
Work Step by Step
The number of moles can be calculated using the molecular formula:
$Number of moles=\frac{mass}{molar mass}$
As the molar mass decrease, the number of moles will increase at a constant mass
Since hydrogen sulfide has the lowest molecular mass the compound will have the largest number of moles of atoms per $100$ grams compared to the other compounds.
