Question

The emprical formula and molecular formula of a compound are CH2O and 180g/mole.what will be the molecular formula of the compound?

Answer 1

First add up the molar masses that make up the substance CH2O:

So: 12.01 + 2 (1.0079) + 15.999 = 30.02

Now see how many times your mass fits into the molar mass of the substance, by dividing:

180/30.02 = 5.99->6

Now the molecular formula is 6 times the ratios of the empirical formula:

So, the molecular formula is:

C6H12O6