Answer:
D. C₂H₂ and C₆H₆
Explanation:
The empirical formula is the simplest formula of a compound. Every compound can be simplified or represented by an empirical formula.
So, from the given choices, the pair expressed as molecular formula and empirical formula is the fourth choice.
C₂H₂ and C₆H₆
The number of atoms in the molecular formula C₆H₆ is 6 carbon and 6 hydrogen.
We can simplify by dividing by 3 into C₂H₂ which is the empirical formula.
