A chemist decided to determine the molecular formula of an unknown compound. He collects following informations: (P) Compound contains 2:1 H to O atom (number fo atoms).
(Q) Compound has 40% C by mass
(R) Approximate molecular mass of the compound is 178 g.
(S) Compound contains C,H and O only.
What is the % by mass of oxygen in the compound?

A chemist decided to determine the molecular formula of an unknown compound. He collects following informations: (P) Compound contains 2:1 H to O atom (number fo atoms). (Q) Compound has 40% C by mass (R) Approximate molecular mass of the compound is 178 g. (S) Compound contains C,H and O only. What is the empirical formula of the compound?

A chemist decided to determine the molecular formula of an unknown compound. He collects following informations: (P) Compound contains 2:1 H to O atom (number fo atoms). (Q) Compound has 40% C by mass (R) Approximate molecular mass of the compound is 178 g. (S) Compound contains C,H and O only. Which of the following could be molecular formula of compound?

An organic compound contains 14 atoms of carbon per molecule. If mass % of carbon in the compound is 22.4% then molecular mass of the compound will be

The molecular mass of an organic compound is 78 and its composition is 92.4% C and 7.6% H. Determine the molecular formula of the compound.

The molecular mass of a compound containing only one nitrogen atom can be

An organic compound contains 14 atoms of carbon per molecules. If mass % of carbon in the compound is 22.4% , then molecular mass of the compound will be: