GENERAL KNOWLEDGE

Detailed explanation-1: -Expert-Verified Answer. A 10.0g of water sample decomposes into 1.11 g of h2 and 8.89 g of o2. This shows Law of definite proportion does exist.

Detailed explanation-2: -The law of constant composition says that, in any particular chemical compound, all samples of that compound will be made up of the same elements in the same proportion or ratio. For example, any water molecule is always made up of two hydrogen atoms and one oxygen atom in a 2:1 ratio.

Detailed explanation-3: -In chemistry, the law of constant composition (also known as the law of definite proportions) states that samples of a pure compound always contain the same elements in the same mass proportion.

Detailed explanation-4: -The law of conservation of mass states that matter cannot be created or destroyed. The law of definite proportions states that a given chemical compound always contains the same elements in the exact same proportions by mass.

Detailed explanation-5: -The law of definite proportions states that when two or more elements combine to form a given compound, they do so in fixed proportions by mass. This is the same as saying the composition of a compound is fixed. For example, sodium chloride contains 39.3% by mass sodium and 60.7% by mass chlorine.