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Q. Hydrogen and oxygen combine to form $H_2O_2$ and $H_2O$ containing 5.93% and 11.2% hydrogen respectively. The data illustrates

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Solution:

$\begin{matrix}H_{2} O\\ H : O\\ 5\cdot93 : 94.07\end{matrix} \begin{matrix}H_{2} O_{2}\\ H : O\\ 11\cdot2: 88\cdot8 or\\ 5\cdot93: 47\cdot0\end{matrix}$
Ratio of different masses of $O$ which combines with same mass of $H$ is $94\cdot07: 47\cdot0$ or $2:1$