Calculate the number of moles of phosphorus (P) atoms in 100 g of phosphorus. If phosphorus is considered to contain `P_4` molecules, then how many moles of `P_4` molecules are there?

Explanation

To solve the problem, we need to calculate the number of moles of phosphorus (P) atoms in 100 g of phosphorus and then determine how many moles of P4 molecules are present in that amount.

### Step-by-Step Solution:

1. **Calculate the number of moles of phosphorus atoms:**
- We use the formula for calculating moles:
\[
\text{Number of moles} = \frac{\text{Given mass}}{\text{Molar mass}}
...