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A compound has 27 grams A and 45 grams B. What is the simple ratio A:B?

Answer and explanation

Correct answer: 3:5

The mass ratio A:B is 27:45. Dividing both terms by their greatest common divisor, 9, gives 3:5. The ratio 5:3 reverses the order of A and B, so it is incorrect. Exam tip: simplify a ratio by dividing both terms by their greatest common divisor.

Related tags

Mass RatioChemical CombinationStoichiometryRatio SimplificationClass 11 ChemistryLaws Of Chemical CombinationSome Basic Concepts Of ChemistryChemistry

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