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Mole Concept: the misconceptions that cost marks

3 wrong ideas students commonly carry in Mole Concept. Each page has a one-question check and a careful explanation of what's actually true.

• Do equal masses of two gases contain the same number of molecules?Myth: Equal masses of two gases contain the same number of molecules.
• Are molarity and molality the same thing?Myth: Molarity and molality are the same thing.
• Is the reactant with the smaller mass always the limiting reagent?Myth: The reactant with the smaller mass is always the limiting reagent.

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