Carbon and oxygen form two known compounds. One compound contains $42.9\%$ carbon,while the other contains $27.3\%$ carbon. This illustrates the law of:

When $0.32 \ g$ of sulfur is burnt in air,$224 \ mL$ of $SO_2$ is obtained at $N.T.P$. In another experiment,$SO_2$ is formed by the decomposition of a compound containing $50\%$ sulfur. The results of the given information follow the law of ......

Which law is illustrated by compounds $H_2O$ and $H_2O_2$ formed from two different elements,$H$ and $O$?

In $SO_2$ and $SO_3$,the masses of oxygen that combine with $48 \, g$ of sulfur are respectively ......... .

Which of the following statements is correct about the given reaction?
$4Fe_{(s)} + 3O_{2_{(g)}} \to 2Fe_{2}O_{3_{(s)}}$

Two compounds are formed by carbon and oxygen. In one compound,the percentage of carbon is $42.9\%$ and in the other,the percentage of carbon is $27.3\%$. Which law of chemical combination is illustrated by this data?