To determine the mass of oxygen gas that reacted with the iron nail, we can use the mass relationship provided in the problem.
The initial mass of the iron nail was 100 g, and after rusting, the mass of the rusted nail was 153 g.
To find the mass of the oxygen that reacted with the iron, we can subtract the mass of the original iron nail from the mass of the rusted nail:
\[ \text{Mass of oxygen} = \text{Mass of rusted nail} - \text{Mass of original nail} \] \[ \text{Mass of oxygen} = 153 , \text{g} - 100 , \text{g} \] \[ \text{Mass of oxygen} = 53 , \text{g} \]
Therefore, the mass of oxygen gas that most likely reacted with the iron nail is 53 g.