Which pair shares the same empirical formula? plz ! a. c2h4 & c6h6 b. c6h6 & c3h3 c. ch2 & c6h6 d. ch & c2h4

The pair which shares the same empirical formula is C6H6 & C3H3.

The empirical formula shows the ratio of atoms of each element in a compound while the molecular formula shows the number of atoms of each element in a molecule.

Hence, if we look at each of the options, we have to decode the option in which the pair represented has the same ratio of atoms of hydrogen and carbon. This pair is C6H6 & C3H3. The carbon and hydrogen atom ratio in each molecule is 1:1 therefore the both of them must have the same empirical formula.

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B) and

Explanation: Molecular formula is the chemical formula which depicts the actual number of atoms of each element present in the compound.  

Empirical formula is the simplest chemical formula which depicts the whole number of atoms of each element present in the compound.

1. The empirical formula for is and is .

2. The empirical formula for is and is .

3. The empirical formula for is and is .

4. The empirical formula for is and is .

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