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If fixed 2 grams element A combines with 3 grams and 6 grams element B in two compounds what is the ratio of B?

Answer and explanation

Correct answer: 1:2

The mass of element A is fixed at 2 g in both compounds. Therefore, compare the masses of element B: 3 g and 6 g. Thus, 3:6 = 1:2. Hence, the correct ratio is 1:2. The ratio 2:1 is the reverse ratio, so it is incorrect. Exam tip: when one element has a fixed mass, simplify the ratio of the masses of the other element.

Related tags

ChemistryChemical CombinationLaw Of Multiple ProportionsMass RatioClass 11Laws Of Chemical CombinationSome Basic Concepts Of ChemistryClass 11 Mcq

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