Answer:
The empirical formula for glucose is C6H12O6.
Glucose is a simple sugar with the molecular formula C6H12O6. The empirical formula is the simplest whole-number ratio of the atoms in a molecule, so we need to divide the subscripts in the molecular formula by their greatest common factor to obtain the empirical formula.
In this case, we can divide all the subscripts by 6, which gives us:
C6H12O6 ÷ 6 = CH2O
So the empirical formula for glucose is CH2O. However, it's worth noting that glucose is usually found in its cyclic form in nature, so the actual molecular formula for glucose is C6H12O6, but the empirical formula is still CH2O.