Which does have more atoms, 1.0 g of hydrogen or 1.0 g of oxygen ?

Explanation

To determine which substance has more atoms between 1.0 g of hydrogen and 1.0 g of oxygen, we will follow these steps:

### Step 1: Calculate the number of moles of hydrogen.
The formula to calculate the number of moles is:
\[ \text{Number of moles} = \frac{\text{mass (g)}}{\text{molar mass (g/mol)}} \]
For hydrogen (H), the molar mass is approximately 1 g/mol.
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