What is the molecular formula for 3-methyl-1-butyne?

What is the molecular formula for 3-methyl-1-butyne?

Step 1: Identify the base structure of butyne. Butyne is a 4-carbon chain with a triple bond, so its base formula is C4H6.
Step 2: Determine the position of the triple bond. In 1-butyne, the triple bond is between the first and second carbon atoms.
Step 3: Identify the methyl group. The '3-methyl' indicates that there is a methyl group (CH3) attached to the third carbon of the butyne chain.
Step 4: Add the methyl group to the butyne structure. This adds one carbon (C) and two hydrogens (H) to the molecular formula.
Step 5: Calculate the total number of carbons and hydrogens. The total number of carbons is 4 (from butyne) + 1 (from the methyl group) = 5. The total number of hydrogens is 6 (from butyne) + 2 (from the methyl group) = 8.
Step 6: Write the final molecular formula. Combine the total number of carbons and hydrogens to get C5H8.

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