The number of possible alkynes with molecular formula `C_5H_8` is

Explanation

To determine the number of possible alkynes with the molecular formula \( C_5H_8 \), we need to consider the structural possibilities of alkynes, which are hydrocarbons containing at least one carbon-carbon triple bond.

### Step-by-Step Solution:

1. **Understanding the Molecular Formula**:
The molecular formula \( C_5H_8 \) indicates that there are 5 carbon atoms and 8 hydrogen atoms. Alkynes follow the general formula \( C_nH_{2n-2} \), which fits for \( n = 5 \) (since \( 2(5) - 2 = 8 \)).

**Hint**: Remember that alkynes have a specific formula that relates the number of carbons to the number of hydrogens.
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