What does the law of definite proportions state? Select the correct answer below: All samples of a pure compound contain the

Question

What does the law of definite proportions state?
Select the correct answer below:
All samples of a pure compound contain the same elements in the same proportion by mass.
When two elements react to form more than one compound, a fixed mass of one element will react with masses of
the other element in a ratio of small, whole numbers.
For every action there is an equal and opposite reaction.
The total energy of the universe is constant.

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