Define empirical formula.

Define chemical formula ?

A hydrocarbon contains 7.7 % hydrogen. calculate the empirical formula.

On analysis a substance was found to contain C = 54.54% H = 9.09% O = 36.36% . calculate the empirical formula.

A substance on analysis gave the following percentage composition Na = 43.4% C = 11.3% O = 45.3% Calculate the empirical formula.

An inorganic substance on analysis gave the following results Na = 29.1% S = 40.5% and O = 30.4% . Calculate its empirical formula.

Find the empirical formula of a compound containing 17.7% hydrogen and 82.3% nitrogen.

Find the empirical formula of a compound containing 62.5% lead , 8.5% nitrogen and 29% oxygen

Determine the empirical formula of an oxide in which mass percent of iron and oxygen are 69.9 and 30.1 respectively.

An organic compound contains 4.07% hydrogen , 71.65% chlorine and remaining carbon. its molar mass is 98.96. Find its empirical formula.

An organic compound on analysis gave the following data : C = 57.82% , H = 3.6% and O = 38.58% . Find its empirical formula.