Answer
1 mol $I_2$ has the greater mass.
Work Step by Step
- 1 mol $I_2$:
1 mol = $6.022 \times 10^{23} molecules$
- Since we are comparing quantities of the same compound $(I_2)$, the one with the higher number of molecules has the greater mass.
Therefore:
In mass: 1 mol $I_2$ > 1 molecule $I_2$
