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In two compounds fixed 12 grams of A combines with 16 grams and 32 grams of B. What is the simple ratio of B masses?

Answer and explanation

Correct answer: 1:2

The mass of A is fixed at 12 g in both compounds, so compare the masses of B: \(16:32=1:2\). Therefore, the correct ratio is 1:2. The ratio 2:1 is the reverse order, whereas the masses are given in the order 16:32. Exam tip: when the mass of one element is fixed, reduce the masses of the other element to the smallest whole-number ratio.

Related tags

ChemistryLaws Of Chemical CombinationLaw Of Multiple ProportionsMass RatioClass 11Some Basic Concepts Of ChemistryClass 11 Mcq

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