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CSCA ChemistryChapter 1: Basic Chemical Concepts and CalculationsBeginner

Amount of Substance & Stoichiometric Calculations

物质的量、摩尔质量与化学计量计算 · Node 1.1

Avogadro constant, molar mass, stoichiometric mole ratios, limiting reagents, and percentage yields.

Chapter Weight: 25% of official examination
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Core Mathematical Axiom

n=Mm​=NA​N​=cV=Vm​V​,% Yield=TheoreticalActual​×100%
CSCA Exam Trap Alert

Comparing reactant masses in grams directly without converting to moles first.

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