Which of the following is an illustration of the law of constant composition?
A)Water boils at 100 °C at 1 atm pressure.
B)Water is 11% hydrogen and 89% oxygen by mass.
C)Water can be separated into other substances by a chemical process.
D)Water and salt have different boiling points.
E)Water is a compound.

Question

Quizplus · Accepted Answer

The law of constant composition states that the relative proportions of elements in a compound are fixed, regardless of how the compound is prepared or where it comes from. Option B provides the composition of water as being 11% hydrogen and 89% oxygen by mass, which demonstrates the law of constant composition.

Which of the Following Is an Illustration of the Law