Question

Each element in a given compound comprises a fixed percent by

Answer 1

Law of definite proportion

Step-by-step explanation:

A compound is a substance which is composed of two or more elements. According to the law of definite proportion, a compound is made up of element in definite and fixed ratio (by mass) therefore elements in compounds comprises of fixed percent. This law was given by English chemist john Dalton in 1808.

Answer 2

This fixed percent is called the definite proportion. Specifically, this phenomenon is states in the Law of Definite Proportions. According to John Dalton, all the individual elements making up the compound has a fixed ratio, whether in mass or in moles. For example, for any amount of H₂O, there will always be a fixed proportion of 2 H atoms: 1 O atom.