Question

if 9 gram of water is decomposed 1 gram of hydrogen is obtained what is the amount of oxygen obtained​

Answer 1

Answer:

In a compound such as water, the ratio of the mass of hydrogen to the mass of oxygen is always 1:8, whatever the source of water. Thus, if 9 g of water is decomposed, 1 g of hydrogen and 8 g of oxygen are always obtained.

Explanation:

Mass of H2O is given 9 gm it means 1/2 mole of H2O.

As we know 1 mole H2O is made by

1mole H2 and 1/2 mole O2.

Therefore 9 gram H2O or 1/2 mole H20 is made by

1/2 mole H2 and 1/4 mole O2.

So mass of Hydrogen will be:

1/2×2=1 gram

And mass of Oxygen will be:

1/4×32=8 gram