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Chemistry B (Stoichiometry (Mole ratio, 1/ molar mass, moles unknown…
Chemistry B
Stoichiometry
Mole ratio
1/ molar mass
moles unknown /moles known
molar mass unknown / 1 mole
Gas Laws
Boyle's Law
Charles's Law
Gay Lussac's Law
Ideal Gas Law
Mole
6.02*10^23
Particles
Atoms
Molecules
Formula Unit
Ion
Molar mass - mass of 1 mol of a substance
Phases of Matter
Kinetic Molecular theory - attempts to explain the properties of gases
Particles are small and separated by empty space
No significant attractive or repulsive forces
Particles are in constant, random motion
Kinetic Energy - KE+ 1/2 mv^2
Temperature
Measure of the average kinetic energy of the particles
At a given temperature, all gases have the same kinetic energy
Pressure
Collision of gas particles with the walls of their containers
Force per unit area
Air pressure is measured using a barometer
Equations
Symbols
S - Solid
L - Liquid
G- Gas
Aq- water solution
Word Equations
Reactants and products
EX: Iron (s) +chlorine (g) -> iron (lll) chloride (s)
Skeletal - FeCl3 (aq) + Na2CO3 (aq) -> NaCl(aq) + Fe2(CO3)3 (s)
Balanced - Fe-2 Cl-6 Na-6 CO3-3 : Fe-2 Cl-6 Na-2 CO3-3