Which of the Following Observations Does Not Relate Specifically to the Law

question 4

Multiple Choice

Which of the following observations does not relate specifically to the law of definite proportions?

• A)Pure water is composed of the elements oxygen and hydrogen in a mass ratio of 8 to 1.
• B)Any sample of a given compound always contains the same proportions by mass of the component elements.
• C)The mass of the products of a chemical reaction is equal to the mass of the starting materials of the reaction.
• D)When a metal reacts with oxygen, the oxygen content of the products is fixed at one or two values.
• E)When water is broken down into its elements by electrolysis, elemental oxygen and hydrogen are formed in an 8 to 1 mass ratio.

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