Chemistry Chapter 8

just rearrangements of atoms

• A and B are reactants that yields C which is the product
• number in front is coefficient

means heat

don't forget diatoms are O2 etc

• S8
• P4
• Diatomic Molecules (Brion Claps his face)

both sides must balance

• find coefficient for compounds before elements 
• balance oxygen last
• keep polyatomic together IF they're on both sides

• Combination
• Decomposition
• Combustion

• 2 or more reactions --> product
• ex NH3 + HCl --> NH4Cl

• opposite of combination reaction 
• ex CaCO3 plus heat --> CaO + CO2

hydrocarbon substance + O2 plus heat --> CO2 + H2O

• Determination of a Empirical Formula 
• flash back empirical is the ratio in which the atoms are

gA, molar mass A, mole A, mole ratio, mole B, molar mass b, grams B

no matter how much you have of one thing, you can't do anything unless you have the other "ingredients"

% yield = actual yield (from experiment/theoretical yield (max yield) x 100