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A pure compound contains 64 percent A and 36 percent B. What is the simple mass ratio A:B?

Answer and explanation

Correct answer: 16:9

The mass percentages of A and B are 64 and 36 respectively, so their mass ratio is 64:36. Dividing both terms by 4 gives the simplest ratio, 16:9. The ratio 9:16 is obtained by reversing A and B, so it is incorrect. Exam tip: reduce a ratio of percentages by dividing both terms by their highest common factor.

Related tags

ChemistryClass 11Mass RatioChemical CompositionPercent CompositionLaws Of Chemical CombinationSome Basic Concepts Of ChemistryClass 11 Mcq

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