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A pure compound contains 18 percent A and 82 percent B. What is the simple mass ratio A:B?

Answer and explanation

Correct answer: 9:41

The mass percentages of A and B are 18 and 82 respectively, so the mass ratio A:B is 18:82. Dividing both terms by 2 gives the simplest ratio, 9:41. Although 18:82 represents the given percentages, it is not in simplest form. Exam tip: write the percentage ratio first, then divide both terms by their greatest common factor.

Related tags

ChemistryChemical CombinationMass RatioPercentage CompositionClass 11Basic ChemistryLaws Of Chemical CombinationSome Basic Concepts Of Chemistry

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