Final answer:
A means of relating mass, number of representative particles, and gaseous volume of a substance is the mole concept, which involves Avogadro's law and the ideal gas law.
Step-by-step explanation:
A means of relating mass, number of representative particles, and gaseous volume of a substance is called the mole concept. This concept incorporates Avogadro's law and the ideal gas law to relate these measurements. The molar mass of any substance is the mass in grams of one mole, equivalent to its molecular mass in unified mass units found on the periodic table.
The ideal gas law, PV = nRT, where P is pressure, V is volume, n is the amount in moles, R is the ideal gas constant, and T is temperature, allows calculation of these properties for a gas. Avogadro's law also helps to relate volume and number of moles under constant temperature and pressure, with one mole of any gas at standard temperature and pressure occupying a volume of 22.4 liters.