The empirical formula and molecular mass of a compound are CH2OCH2O and 180 g, respectively. The molecular formula of the compound is:
1. C9H18O9
2. CH2O
3. C6H12O6
4. C2H4O2

Hint: n=Molecularn=Molecular massEmpiricalmassEmpirical formulaformula massmass
Empirical formula mass=CH2O=CH2O
FormulaFormula massmass isis 
=12+2×1+16=30=12+2×1+16=30
MolecularMolecular mass=180mass=180
n=Molecularn=Molecular massEmpiricalmassEmpirical formulaformula massmass
=18030=6=18030=6
Molecular formula=n×empirical formula
=6×CH2O
=C6H12O6
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