Question

Water molecules have hydrogen and oxygen in ratio of 1:8 by mass find the ratio of number of atoms of elements in water molecules

Answer 1

Water has formula H2O. So number of H atoms is 2 and number of O atoms is 1. Thus ratio of number of atoms of H to number of atoms of O is 2:1.

Answer 2

Answer:

The ratio of hydrogen atoms to oxygen atoms used to make water molecules is always 2:1, no matter how many water molecules are being made.