Quantitative aspects of chemical change notes

This section is the mole as the SI unit for amount of substance, Avogadro's constant, **$n=N/N_A$, molar mass, and$n=m/M$. It is not molar gas volume, concentration, empirical formulae or reaction…

This section is reaction stoichiometry: using a balanced equation as a mole-ratio recipe, then converting mass ↔ mole ↔ gas volume at STP. It is not the full mole / molar mass definitions section…

In a real reaction the reactants are rarely mixed in the exact mole ratio from the balanced equation. One reactant runs out first and stops the reaction. That reactant is the limiting reagent (also…

This section covers concentration of solutions (**$c=n/V$), empirical formulae from percentage composition (or mass), and molecular formulae from the empirical formula plus relative molecular mass ($M_r$…