Mole (mol) is SI unit for substance amount, defined as 6.022 x 10²³ particles. Molar mass of NaCl is 58.44 g/mol. Moles are standardized for expressing quantities of atoms or molecules
A mole is the number of things equal to 6.022×10²³ things. One mole of carbon-12 contains exactly 12 grams of carbon-12. The mole unit links microscopic and macroscopic quantities
Ksp describes saturated solutions of low-solubility ionic compounds. Saturated solution is in equilibrium between dissolved and undissolved ions. Ksp is calculated using equilibrium expression: Kc = [My+]x[Ax-]y
Oxidation number indicates an atom's oxidation or reduction state in chemical reactions. Electron loss increases oxidation number, gain decreases it. Free elements have oxidation number zero
Molarity is moles of solute per liter of solution (mol/L or M). Molar mass is sum of atomic weights of molecules. Solute is smaller component dissolved by solvent. Solvent is usually water or organic solvent
Stoichiometry is the quantitative analysis of reactants and products in chemical reactions. Term comes from Greek "stoikhein" (element) and "metron" (measure). Based on law of conservation of mass, total reactant mass equals total product mass