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In two compounds fixed 9 grams of A combines with 15 grams and 45 grams of B. What is the simple ratio of B masses?

Answer and explanation

Correct answer: 1:3

For the fixed 9 g mass of A, the masses of B are 15 g and 45 g. Therefore, their ratio is 15:45 = 1:3, obtained by dividing both terms by 15. The ratio 3:1 is the reverse order, so it is incorrect. Exam tip: reduce a mass ratio by dividing both terms by their greatest common factor.

Related tags

ChemistryLaws Of Chemical CombinationMultiple ProportionsMass RatioClass 11Some Basic Concepts Of ChemistryClass 11 Mcq

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