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Class 11ChemistrySome Basic Concepts of ChemistryLaws of chemical combinationEasy
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Which statement correctly describes the law of conservation of mass for a chemical reaction in a closed system?

Answer and explanation

Correct answer: The total mass of the reactants equals the total mass of the products

In a closed system, no matter enters or leaves. Therefore, the total mass of the reactants equals the total mass of the products; mass is neither created nor destroyed in the reaction.

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ChemistryLaws Of Chemical CombinationSome Basic Concepts Of ChemistryClass 11 Mcq
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10 more MCQs
  1. 1Who is commonly credited with formulating the law of conservation of mass?
  2. 2In 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?
  3. 3Who proposed the law of definite proportions, also known as the law of constant composition?
  4. 4What does the law of definite proportions state about a pure compound?
  5. 5In a pure sample of water, what happens to the mass ratio of hydrogen to oxygen?
  6. 6The law of multiple proportions is associated with which scientist?
  7. 7When does the law of multiple proportions apply?
  8. 8According 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?
  9. 9Who proposed the law of reciprocal proportions?
  10. 10The law of reciprocal proportions describes a mass relationship among how many elements?
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