quantitative chemistry

Law of Conservation of Mass

No atoms are lost or made during a chemical reaction, so the total mass of the products equals the total mass of the reactants.

Relative Formula Mass (Mr)

The sum of the relative atomic masses of the atoms in the numbers shown in the chemical formula.

Mole

The unit for the amount of a substance, containing Avogadro's number ($6.02 \times 10^{23}$) of particles.

Avogadro's Constant

The number of atoms, molecules, or ions in one mole of a substance ($6.02 \times 10^{23}$).

Limiting Reactant

The reactant that is completely used up first in a chemical reaction, limiting the amount of product formed.

Concentration

A measure of the amount of solute dissolved in a given volume of solvent, measured in g

Percentage Yield

(Actual mass of product

Atom Economy

A measure of the amount of starting materials that end up as useful products; (Mr of desired product

Molar Volume of Gas

One mole of any gas occupies 24 dm³ at room temperature and pressure (RTP).