Calcualte the molecualr formula of compound which contains 20% Ca and 80% Br (by wt.) if molecualr weight of compound is 200. (Atomic wt. Ca= 40, Br=80)

A compound containing 80% C and 20% H is likely to be:

Calculate the empirical and molecular formula of the compound containing 80% Carbon, 20% Hydrogen. If the molecular mass of the compound is 30 then determine the molecular formula.

A compound contains 20% sulphur. The molecular weight of the compound could be

A compound contains 20% sulphur. The molecular weight of the compound could be

A compound contain 3.4% by weight of sulphur, the minimum molecular wt of compound is:-

A compound contain 3.4% by weight of sulphur, the minimum molecular wt of compound is:-

Find the empirical form~a of a compound of carbon and hydrogen which contains 80% carbon. If the molecular weight of the above compound is 30, what is its molecular formula ?

Calculate molality of one litre of solution containing 200 gm CaBr_(2) . Given density of solution equal to 1.0 gm/ml. (Atomic mass of Ca = 40, Br = 80)