How can you describe the designation 6, 6, mean in the name nylon -6, 6?

Explanation

To describe the designation "6, 6" in the name nylon-6,6, we need to analyze the structure of the monomers used to synthesize this polymer.

### Step-by-Step Solution:

1. **Identify the Monomers**:
- Nylon-6,6 is synthesized from two specific monomers: adipic acid and hexamethylene diamine.
- Adipic acid has the formula HOOC-(CH2)4-COOH, which contains 6 carbon atoms.
- Hexamethylene diamine has the formula H2N-(CH2)6-NH2, which also contains 6 carbon atoms.
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