Question

if 90g of pure water is obtained through Xg of hydrogen .find the value of X , whish chemical law is illustrated by this statement

Answer 1

as the ratio of hydrogen and oxygen in water is 2:1, so let us take amount of hydrogen 2a and that of oxygen is a in 90g water.
So, 2a + a = 90
3a = 90
a = 90/3 = 30
Hence, amount of hydrogen = X = 2 × 30 = 60g