describe multiple proportion law?

Question

weight

Answer 1

Proust said that all samples of the same compound are composed of the same elements with the same proportion by mass. EX: H2O, CO2. That was the law of Definite Proportions. Later Dalton revised this law. It was determined that sometimes the same two elements will combine to give two or more different compounds. EX: water is H2O hydrogen peroxide is H2O2, arbon dioxide is CO2, carbon monoxide is CO. Dalton proposed the Law of Multiple Proportions. When two or more elements combine to form a compound, the masses are always in small whole-number ratios. H2O 2:1, H2O2 2:2,
CO2 1:2, CO 1:1