When two elements, A and B, form two different compounds, the masses of element B that combine with 1 g of element A can be expressed as a ratio of small whole numbers. Which law does this refer to?
A) Law of definite proportions
B) Law of the conservation of mass
C) Law of modern atomic theory
D) Law of multiple proportions
E) First law of thermodynamics

Question

Quizplus · Accepted Answer

This statement refers to the Law of multiple proportions, which states that when two elements form two different compounds, the ratio of the masses of element B that combine with 1 g of element A can be expressed in small whole numbers. This law can be used to determine the relative atomic masses of the elements involved.

When Two Elements, a and B, Form Two Different Compounds