A Mole is an Unit. Representative Particles Caribbean = Covalent Monkeys = Molecules Caribbean...
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A Mole is an Unit
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Transcript of A Mole is an Unit. Representative Particles Caribbean = Covalent Monkeys = Molecules Caribbean...
Representative ParticlesType of Substance Description R.P. ( UNIT)
Element 1 symbol ATOM
Covalent Molecule 2 or more NM MOLECULE
Ionic Compound Cation-Anion M -NM
FORMULA UNIT
Caribbean = CovalentMonkeys = Molecules
Caribbean Monkeys Eat Avocados In Forest
Eat = ElementAvocados = Atoms
Caribbean Monkeys Eat Avocados In Forest
Caribbean Monkeys Eat Avocados In Forest
In = IonicForest = Formula Unit
1 mole = 6.02 x 1023 atomor
1 mole = 6.02 x 1023 moleculeor
1 mole = 6.02 x 1023 formula unit
Determine the type of Representative Particle
1. Mg 2. C3H8
3.NaCl 4. CBr4
5. Li 6. K2O
7. Cl2 8. H2O
Example Problems
Using Representative Particles
How many moles of magnesium is 1.25 x 1023 atoms?
Given Info:
Conversions:
Work:
Looking for? Answer:
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
How many grams are in 2 moles of calcium hydroxide?
Given Info:
Conversions:
Work:
Looking for? Answer:
How many molecules are in 4.42 x 106g of water molecules?
Given Info:
Conversions:
Work:
Looking for?
Answer
How many molecules are in 4.42 x 106g of water molecules?
Given Info: 4.42 x 106g
Conversions:MM = 18.02g H2O 1 mole1mole = 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
How many liters are 2.78 x 1031 molecules? Given Info:
Conversions:
Work:
Looking for? Answer:
How many liters are 2.78 x 1031 molecules? Given Info: 2.78 x 1031 molecules
Conversions: 1 mole =6.02x1023 molecules
Work:
2.78 x1031 molecules 1 mole 22.4L
6.02 x 1023 1 mole molecules
Looking for? liters Answer: 1.03 x 109 L
The density of a gaseous compound containing carbon and oxygen is 1.964 g/L @ STP. Determine the molar mass of the compound.
Given Info:
Conversions:
Work:
Looking for? Answer:
