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Which unit or information is useful in the law of definite proportions?

Answer and explanation

Correct answer: Mass percentage

The law of definite proportions states that a pure compound always contains its constituent elements in a fixed ratio by mass. Mass percentage gives the percentage by mass of each element in a compound, so it is useful for understanding and verifying this law. Colour, odour, and container shape do not indicate the mass ratio of the elements. Exam tip: link a fixed mass ratio with percentage composition or mass percentage.

Related tags

ChemistryClass 11Law Of Definite ProportionsMass PercentageChemical CombinationPercentage CompositionLaws Of Chemical CombinationSome Basic Concepts Of Chemistry

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