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If 3 grams A and 7 grams B form 9 grams product and 1 gram gas is mass conserved?

Answer and explanation

Correct answer: Yes, because the total mass of reactants and products is 10 g

The total mass of reactants is 3 g + 7 g = 10 g. The total mass of products is 9 g + 1 g of gas = 10 g. Therefore, the law of conservation of mass is satisfied. Option D may be generally true, but it does not establish equality of the given masses. Exam tip: always include the mass of every product, including gases, before comparing both sides.

Related tags

ChemistryConservation Of MassChemical ReactionsLaws Of Chemical CombinationClass 11 ChemistrySome Basic Concepts Of ChemistryClass 11 Mcq

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