The empirical formula of a compound is the simplest whole number ratio of its constituent elements. To find the empirical formula of C6H12 and C6H14, we need to determine the greatest common factor (GCF) of their subscripts.

For C6H12, the GCF of 6 and 12 is 6. Dividing both subscripts by 6 gives us the empirical formula CH2.

For C6H14, the GCF of 6 and 14 is 2. Dividing both subscripts by 2 gives us the empirical formula C3H7.

Therefore, C6H12 and C6H14 do not have the same empirical formula.