Question

The Law of Constant Proportions states that?

• A. the pressure of a gas is directly proportional to its temperature at constant volume
• B. energy cannot be created or destroyed, only transformed
• C. the total mass of reactants equals the total mass of products in a chemical reaction
• D. a given chemical compound always contains its component elements in a fixed ratio by mass

Answer 1

Answer:

D. a given chemical compound always contains its component elements in a fixed ratio by mass

The Law of Constant Proportions states that a given chemical compound always contains its component elements in a fixed ratio by mass, irrespective of the source or method of preparation. In chemistry, the law of definite proportions, sometimes called Proust's law or the law of constant composition, states that a given chemical compound contains its constituent elements in a fixed ratio (by mass) and does not depend on its source or method of preparation.