1. Stoichiometry Quick Notes

2. Mole-Mass  Multiplying the number of moles of a substance by its molar mass give the mass of the substance.  Dividing the mass of a substance by its molar mass give the number of moles of that substance.

3. Mole- Molecule  Multiplying the number of moles of a substance by Avogadro’s number gives the molecules of the substance.  Dividing the molecules of a substance by Avogadro’s number give the number of moles of that substance.

4. Mole-Volume  One mole of any gas at STP (1atm pressure and 0 degrees C) occupies a volume of 22.4L.  The density f any gas at STP is its molar mass divided by 22.4L  The same procedure goes: from moles you multiply to moles you divide