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A glucose sample has a mass of 18 g and a molar mass of 180 g mol⁻¹. How many moles of glucose are present?

Answer and explanation

Correct answer: 0.1 mol

The number of moles is calculated by dividing the given mass by the molar mass: n = m/M. Therefore, n = 18 g ÷ 180 g mol⁻¹ = 0.1 mol. The gram units cancel appropriately, leaving the unit mol. Thus, the sample contains 0.1 mole of glucose. This is a direct application of the mole concept and molar mass relationship.

Related tags

Mole ConceptMolar MassGlucoseStoichiometryMole Concept And Molar MassSome Basic Concepts Of ChemistryChemistryClass 11 Mcq

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