Question

The ratio of the molecular weight of Hydrogen and Oxygen in water is 1 : 8. Find the quantity of Hydrogen if Oxygen is 12 grams and the quantity of oxygen if hydrogen is $\frac{3}{2}gms.$.

Answer 1

Given that the ratio of molecular weight of Hydrogen and Oxygen in water is $1:8$

Let the amount of hydrogen be $x$ and the amount of oxygen be $y$

Given that $x:y=1:8$

$⟹\frac{x}{y}=\frac{1}{8}$

$⟹y=8x$ -------(1)

Given that oxygen is $12gm$

Therefore, the amount of hydrogen is $12=8x$

$⟹x=\frac{12}{8}$

$⟹x=\frac{3}{2}$

Given the quantity of hydrogen $=32gm$

So, the quantity of oxygen is $y=8\times 32$

$⟹y=256gms$