Question

Which element combine together in fixed proportion

Answer 1

It states that “A chemical compound is always found to be made up of the same elements combined together in the same fixed proportion by mass”. For example, a sample of pure water from various sources or any country is always made up of only hydrogen andoxygen.

Answer 2

In chemistry, the law of definite proportion, sometimes called Proust's law or the law of definite composition, or law of constant composition states that a given chemical compound always contains its component elements in fixed ratio (by mass) and does not depend on its source and method of preparation.