Cross-topic Connections

This Chapter's Concept	Connected Chapter	How It Connects
Mole concept, Avogadro's number	Atomic Structure (PC-02)	Atomic mass and isotopic mass use the same amu framework
Concentration terms (molarity)	Ionic Equilibrium (PC-07)	[ $H^{+}$ ], Ka, Kw are all molar concentrations
Stoichiometry, mole ratios	Chemical Equilibrium (PC-06)	Kc and Kp expressions are built on molar concentrations
Limiting reagent, theoretical yield	Electrochemistry (PC-09)	Faraday's laws use moles of electrons (equivalents)
Normality, n-factor	Redox Reactions (PC-08)	n-factor for oxidising/reducing agents in titrations
% composition, empirical formula	Organic Chemistry basics (OC-01)	Determination of molecular formula from combustion analysis
Concentration terms, molality	Solutions & Colligative Properties (PC-10)	$\Delta Tb$ = Kb × m; $\Delta Tf$ = Kf × m use molality directly
ppm concentration	Environmental Chemistry (PC-14)	Air and water pollutant levels expressed in ppm/ppb

Biochemistry (NEET Biology): Enzyme substrate concentrations are in mmol/L (mM); drug $IC_{50}$ values are molar concentrations.
Osmosis / osmotic pressure: π = MRT links Molarity (M) to osmotic pressure — tested in both chemistry and biology.