IMPORTANT FORMULAS
(USE WHEN REACTANTS AND PRODUCTS ARE SOLIDS)
The mass of 1 MOLE of any substance it is MOLAR MASS
1 MOLE = 6.02 x 10^23 atoms – or molecules- or ions
MOLES = grams of the substance / molar mass of the substance
MOLES = # of molecules or atoms / 6.02 x 10^23
Moles of atoms in a compound = subscript of atom x moles of compound
** example -- if we have 2.5 moles of water (H2O) then
We would have 2 x 2.5moles of hydrogen= 5 moles of H atoms
We would have 1 x 2.5 moles of oxygen = 2.5 moles of O atoms
# of Molecules = moles of compound x 6.02 x 10^23
Grams of a substance = moles x molar mass of the substance
# of Atoms = moles of atoms x 6.02 x 10^23
Course Outline:
4th Nine weeks – Solutions, Acids and Bases, Chemical Bonding,
Organic chemistry
|
|
