From Leonardo da Vinci sketching with his left hand to Einstein supposedly jotting down relativity formulas as a lefty, popular culture has built an impressive mythology around left-handedness and ...

the formula for carbon dioxide is CO 2. It has one carbon atom (relative atomic mass = 12.0) and two oxygen atoms (relative atomic mass = 16.0): M r of CO 2 = 12.0 + 16.0 + 16.0 = 44.0 It could ...

You can work out the molecular formula from the empirical formula, if you know the relative mass formula (M r) of the compound. Add up the atomic masses of the atoms in the empirical formula.