Yes, the empirical formula is the most basic ratio of the elements in a compound, while the molecular formula is the ratio in a compound. For instance C5H10O could be both the empirical and the...
No, some times they are same. the molecule in which any type of atoms are in prime numbers (divisible by themselves only) then empirical and molecular formula are same as C12H22O11 and C3H7Cl
The molecular formula of a compound is the number of atoms of each element in one molecule. So in water (H2O), one molecule of water has 2 Hydrogen atoms and one oxygen.