Answer:
CH₃ and C₂H₆ have same empirical formula.
Step-by-step explanation:
The empirical formula is the simplest formula obtained by dividing the molecular formula with a number.
It gives the proportion of each element present in the compound however the exact number of each element is shown by only molecular formula.
For CH₃ : the empirical formula will is CH₃
For C₂H₆: the empirical formula will is CH₃ obtained by dividing the molecular formula by two.