Determine the empirical formula of an oxide of iron which contains `69.9%` iron and `30.1%` oxygen by mass.

The molecular formula of the oxide of iron in which mass percentage of iron is 69.9

What is the empirical formula of vanadium oxide, if 2.74 g of the metal oxide contains 1.53 g of metal ? (Atomic mass of vanadium=52 u)

An oxide of nitrogen contains 25.9% of nitrogen. What is its empirical formula

If the mass percent of the various elements of a compound is known, its empirical formula can be calculate. A compound contains 4.07% hydrogen, 24.27% carbon and 71.65% chlorine. Its molecular mass is 98.96. What are the empirical and molecular formulae?

If the mass percent of various elements of a compound' is known, its empirical formula can be calculated A compound contains 4.07% hydorgen, 24.27% carbon and 71.65% chlorine. Its molecular mass is 98.96. What are its empirical and molecular formulae?

Irrespective of the source, pure sample of H_2O always contains 88.89% by mass of oxygen and 11.11% by mass of hydrogen. Which law is illustrated here?

Irrespective of the source, pure sample of H_2O always contains 88.89% by mass of oxygen and 11.11% by mass of hydrogen. State the law.

Arsenic forms two oxides, one of which contains 65.2% and the other, 75.7% of the element. Determine the equivalent weights of arsenic in both cases.