Question

The elements composing a are combined in a definite proportion by mass .

Answer 1

Law of Definite Proportions states that in a given type of chemical substance, the elements are always combined in the same proportions by mass. Oxygen makes up 88.8% of the mass of any sample of pure water, while hydrogen makes up the remaining 11.2% of the mass.

Answer 2

Law of Definite Proportions states that in a given type of chemical substance, the elements are always combined in the same proportions by mass. ... Oxygen makes up 88.8% of the mass of any sample of pure water, while hydrogen makes up the remaining 11.2% of the mass