Practice: Determine the molar mass for the following:

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Practice: Determine the molar mass for the following: FeCl3 3.CaC2O4 P2O5 4. Ba(ClO3)2

Practice: Determine the molar mass for the following: FeCl3 55.85 + (35.45 * 3) =162.20 g/mole 2. P2O5 (30.97*2)+(16.00*5)=141.94 g/mole 3.CaC2O4 40.08 + (2*12.01) + (4*16.00) =128.10 g/mole 4. Ba(ClO3)2 137.33 + (35.45*2) +(16.00*6) =304.23 g/mole

(atom, molecule, formula units) Particles (atom, molecule, formula units) Grams Mole Volume (@STP)

A Mole= 6.02 x 1023 particles

or 1 mole = 6.02 x 1023 molecule 1 mole = 6.02 x 1023 formula unit 1 mole = 6.02 x 1023 atom or 1 mole = 6.02 x 1023 molecule 1 mole = 6.02 x 1023 formula unit

Particles Type of Substance Description Particles ( UNIT) Element 1 symbol ATOM Covalent Molecule 2 or more NM MOLECULE Ionic Compound Cation-Anion M -NM FORMULA UNIT

Determine the type of Particle 1. Mg 2. C3H8 3.NaCl 4. CBr4 5. Li 6. K2O 7. Cl2 8. H2O

Determine the type of Particle 1. Mg 2. C3H8 3.NaCl 4. CBr4 5. Li 6. K2O 7. Cl2 8. H2O

(atom, molecule, formula units) Particles (atom, molecule, formula units) Mole

Using Representative Particles Example Problems Using Representative Particles

How many molecules are in 2.12 mole of propane-C3H8 ? Given Info: Conversions: Work: Looking for? Answer:

How many molecules are in 2.12 mole of propane-C3H8 ? Given Info: 2.12 mole C3H8 Conversions: 1 mole = 6.02x1023 molecule Work: 2.12 mole 6.02 x 1023 molecule C3H8 C3H8 1 mole C3H8 Looking for? molecules C3H8 Answer: 1.28 x 1024 molecule C3H8

Example Problems Using Molar Mass

Grams Mole

How many molecules are in 4.42 x 106g of water molecules? Given Info: Conversions: Work: Looking for? Answer

(atom, molecule, formula units) Particles (atom, molecule, formula units) Grams Mole

How many molecules are in 4.42 x 106g of water molecules? Given Info: 4.42 x 106g Conversions: MM = 18.02g H2O 1 mole 1mole = 6.02x1023 molecule Work: 4.42x106g 1 mole 6.02x1023 molecules H2O H2O H2O 18.02 g 1 mole H2O H2O Looking for? molecules Answer: 1.48 x 1029 molecules

Example Problems Using Molar Volume

Molar Volume @ STP only Standard Temperature and Pressure: STP Standard Temperature: 273K Standard Pressure: 1 atmosphere (atm) At these 2 conditions: Molar Volume 1 mole = 22.4L

Mole Volume (@STP)

How many liters are 2.78 x 1031 formula unit of lead (IV) oxide? Given Info: Conversions: Work: Looking for? Answer: How many liters are 2.78 x 1031 formula unit of lead (IV) oxide?

How many liters are 2.78 x 1031 formula units of lead (IV) Oxide? Given Info: 2.78 x 1031 molecules Conversions: 1 mole =6.02x1023 formula unit PbO2 Work: 2.78 x1031 formula unit PbO2 1 mole PbO2 22.4L PbO2 6.02 x 1023 1 mole PbO2 formula unit PbO2 Looking for? liters Answer: 1.03 x 109 L PbO2 How many liters are 2.78 x 1031 formula units of lead (IV) Oxide?

A Mole is an Unit