Number Density for A Molecules is usually measured using the Millimole per Cubic Centimeter[mmol/cm³] for Molar Concentration. Mole per Cubic Meter[mmol/cm³], Mole per Liter[mmol/cm³], Mole per Cubic Millimeter[mmol/cm³] are the few other units in which Number Density for A Molecules can be measured.