Interpretation:
The way the law of definite proportions applies to compounds is to be determined.
Concept introduction:
The compound is made up of two or more than two elements in the same proportions by mass; where the mass of both elements participates to form compounded mass. The ratio is different for different compounds but the proportions by mass fixed.

Answer to Problem 26SSC
The mass of compounds is determined by the law of definite proportion.
Explanation of Solution
A chemical compound is always made up of the fixed same proportion of elements by mass.
“The law of definite proportions” defines the mass composition of a substance.
For example: a sodium chloride compound is composed of one atom of sodium and one atom of chlorine. So, there are fixed proportions of sodium and chlorine to form a compound (sodium chloride).
By applying the law of definite proportions, the compound formation is fixed in the ratio/ and fixed molecular formula.
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