Calculate the mass of the following
a. One atom of calcium
b. One molecules of `SO_(2)`

Explanation

To solve the problem of calculating the mass of one atom of calcium and one molecule of sulfur dioxide (SO₂), we will follow these steps:

### Step 1: Calculate the mass of one atom of calcium (Ca)

1. **Determine the molar mass of calcium**: The molar mass of calcium (Ca) is approximately 40 grams per mole.
2. **Use Avogadro's number**: Avogadro's number is \(6.022 \times 10^{23}\) atoms/mole. This means that one mole of calcium contains \(6.022 \times 10^{23}\) atoms.
3. **Calculate the mass of one atom**:
\[
...