Which is the structural formula for ethane?

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Multiple Choice

Which is the structural formula for ethane?

Explanation:
Ethane is a two-carbon alkane with a single bond between the two carbons and a total of six hydrogens. The structural formula CH3-CH3 shows exactly that: two CH3 groups connected by a bond, giving C2H6. The other formulas represent different hydrocarbons: CH4 is methane with one carbon, CH3-CH2-CH3 is propane with three carbons, and CH3-CH2-CH2-CH3 is butane with four carbons. So CH3-CH3 is the correct representation of ethane.

Ethane is a two-carbon alkane with a single bond between the two carbons and a total of six hydrogens. The structural formula CH3-CH3 shows exactly that: two CH3 groups connected by a bond, giving C2H6. The other formulas represent different hydrocarbons: CH4 is methane with one carbon, CH3-CH2-CH3 is propane with three carbons, and CH3-CH2-CH2-CH3 is butane with four carbons. So CH3-CH3 is the correct representation of ethane.

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