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In two compounds 6 grams A combines with 5 grams and 25 grams B. What ratio is obtained?

Answer and explanation

Correct answer: 1:5

The mass of A is the same, 6 g, in both compounds, so compare the masses of B: 5:25. Dividing both terms by 5 gives 1:5. The ratio 5:1 is the reverse ratio, so it is incorrect. Exam tip: in multiple-proportion questions, compare the masses of one element that combine with a fixed mass of the other and reduce them to the simplest whole-number ratio.

Related tags

Law Of Multiple ProportionsChemical CombinationMass RatioClass 11 ChemistryStoichiometryLaws Of Chemical CombinationSome Basic Concepts Of ChemistryChemistry

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