Which of the following has largest number of oxygen atoms?
`1.0g" of O atoms, 1.0 g of "O_(2)," 1.0 g of ozone "(O_(3)).` Justify your answer.

Explanation

To determine which of the given substances has the largest number of oxygen atoms in 1.0 g, we need to calculate the number of moles of oxygen atoms in each substance and then convert that to the number of oxygen atoms.

### Step 1: Calculate the number of moles of oxygen in each substance.

1. **For 1.0 g of O atoms:**
- The molar mass of O (oxygen) = 16 g/mol.
- Moles of O = mass (g) / molar mass (g/mol) = 1.0 g / 16 g/mol = 0.0625 moles.
- Since each mole of O contains 1 mole of oxygen atoms, the number of oxygen atoms = 0.0625 moles × Avogadro's number (6.022 × 10²³ atoms/mol) = 3.76 × 10²² atoms.
...