law of constant proportion

Who discovered the Law of Constant Composition, also known as the Law of Definite Proportions?

• John Dalton

• Antoine Lavoisier

• Joseph Proust

• Claude-Louis Berthollet

What is the main idea behind Proust's Law of Constant Proportion?

• Elements combine in varying proportions in different compounds

• Elements combine in the same proportion by mass in a chemical compound

• Elements combine randomly in a chemical compound

• Elements combine in a fixed volume ratio in a chemical compound

What is the ratio of hydrogen to oxygen by mass in pure water according to Proust's Law of Constant Proportion?

• 1:1

• 1:6

• 1:8

• 1:10

"In a compound, the elements always present in the fixed ratio of their mass." is a ....

• Law of constant proportion

• Law of conservation of mass

• Law of multiple proportion

• None of the above

Who proposed Law of constant proportion?

• John Dalton

• Joseph L Proust

• Lavoisier

• Neil's Bohr