posted by nick .
If a compound's empirical formula is CH2O and its' formula mass is 120.12 amu, what is its' molecular formula
CH2O = what for empirical formula mass?
C= about 12
H = about 2
O = about 16
Total = about 30
120.12/30 = 4 so the molecular formula is
(CH2O)4 or C4H8O4.