Classify the following substances under the headings strong electrolytes , weak electrolytes and nonelectrolytes .

Explanation

To classify the given substances into strong electrolytes, weak electrolytes, and nonelectrolytes, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definitions**:
- **Strong Electrolytes**: Substances that completely dissociate into ions in solution, allowing for high conductivity.
- **Weak Electrolytes**: Substances that partially dissociate into ions in solution, resulting in lower conductivity.
- **Nonelectrolytes**: Substances that do not dissociate into ions in solution and therefore do not conduct electricity.
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