Question

the percentage of all elements present in a compound are 92 what does it indicate​

Answer 1

Answer:

Percentage of an element in compound indicated its percentage contribution to the total mass of that compound.

For example:

On water molecule..

Molar mass of water =18g

Out of this 18 g, 2 g is contributed by 2 H atoms present in one molecule of water.

So,

percentage of H in water = (2/18) x 100 = 11.11%

There are two atoms of H present in one molecule of water,

Answer 2

The compound contain oxygen 8% and other element as 92%.

Percentage composition helps us which type of atoms are present in a molecule.

Explanation:

• It is calculated from the molecular formula.
• The Molecular formula is obtained by dividing the mass of the element in one mole of the compound.This is called the percentage composition.
• Determination of percentage composition helps to find the amount of element in a specific compound.
• The percentage of all elements present in a compound are 92 indicates that the compound contains oxygen as 100-92= 8%
• Thus the compound contains oxygen 8% and other elements  92%.