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Subjects
Class 11ChemistrySome Basic Concepts of ChemistryLaws of chemical combinationEasy
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In a closed vessel total reactants are 88 grams. If one product is 63 grams what is the other product?

Answer and explanation

Correct answer: 25 grams

By the law of conservation of mass, the total mass of reactants in a closed vessel equals the total mass of products. Therefore, the mass of the other product is 88 - 63 = 25 grams. The 63 g value is already the mass of one product, so it cannot be the other product. Exam tip: first write total mass of reactants = total mass of products in such questions.

Related tags

ChemistryLaw Of Conservation Of MassChemical CombinationClass 11Mass CalculationClosed VesselLaws Of Chemical CombinationSome Basic Concepts Of Chemistry
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10 more MCQs
  1. 1Who is commonly credited with formulating the law of conservation of mass?
  2. 2Which statement correctly describes the law of conservation of mass for a chemical reaction in a closed system?
  3. 3In which type of system can the total mass of a reacting sample be measured as remaining constant without accounting for matter exchanged with the surroundings?
  4. 4Who proposed the law of definite proportions, also known as the law of constant composition?
  5. 5What does the law of definite proportions state about a pure compound?
  6. 6In a pure sample of water, what happens to the mass ratio of hydrogen to oxygen?
  7. 7The law of multiple proportions is associated with which scientist?
  8. 8When does the law of multiple proportions apply?
  9. 9According to the law of multiple proportions, what is the ratio of the masses of one element that combine with a fixed mass of another element in different compounds?
  10. 10Who proposed the law of reciprocal proportions?
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