A sample of heptane always contains 84% carbon and 16% hydrogen. Which of these best explains this phenomena?
A) Law of Constant Composition
B) Law of Conservation of Mass
C) Dalton's Atomic Theory
D) Law of Mass Action
E) Lavoisier's Law

Question

Quizplus · Accepted Answer

The Law of Constant Composition, also known as the Law of Definite Proportions, states that a pure compound always contains the same elements in the same proportion by mass. Therefore, heptane always contains 84% carbon and 16% hydrogen, regardless of its source or method of preparation.

A Sample of Heptane Always Contains 84% Carbon and 16