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The Mole. Molar Conversions. VERY. A large amount!!!!. A. What is the Mole?. A counting number (like a dozen) Avogadro’s number (N A ) 1 mol = 6.02  10 23 items. This is the fundamental definition of what one mole is:.

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The mole

The Mole

Molar Conversions


A what is the mole

VERY

A large amount!!!!

A. What is the Mole?

  • A counting number (like a dozen)

  • Avogadro’s number (NA)

  • 1 mol = 6.02  1023 items


This is the fundamental definition of what one mole is
This is the fundamental definition of what one mole is:

  • One mole contains as many “entities” (things) as there are atoms in 12 grams of carbon-12.

  • One mole of carbon-12 contains

    6.02 x 1023 atoms of carbon-12.


A what is the mole1
A. What is the Mole?

HOW LARGE IS IT???

  • 1 mole of pennies would cover the Earth 1/4 mile deep!

  • 1 mole of hockey pucks would equal the mass of the moon!

  • 1 mole of basketballs would fill a bag the size of the earth!


B molar mass
B. Molar Mass

  • Mass of 1 mole of an element or compound.

  • Atomic mass tells the...

    • atomic mass units per atom (amu)

    • grams per mole (g/mol)


B molar mass examples
B. Molar Mass Examples

12.01 g/mol

26.98 g/mol

65.39 g/mol

  • carbon

  • aluminum

  • zinc


B molar mass examples1
B. Molar Mass Examples

  • water

  • sodium chloride

  • H2O

  • 2(1.01) + 16.00 = 18.02 g/mol

  • NaCl

  • 22.99 + 35.45 = 58.44 g/mol


B molar mass examples2
B. Molar Mass Examples

  • sodium bicarbonate

  • sucrose

  • NaHCO3

  • 22.99 + 1.01 + 12.01 + 3(16.00) = 84.01 g/mol

  • C12H22O11

  • 12(12.01) + 22(1.01) + 11(16.00) = 342.34 g/mol



C molar conversions

MASS

IN

GRAMS

MOLES

NUMBER

OF

PARTICLES

C. Molar Conversions

molar mass

6.02  1023

(g/mol)

(particles/mol)


C molar conversion examples
C. Molar Conversion Examples

  • How many moles of carbon are in 26 g of carbon?

26 g C

1 mol C

12.01 g C

= 2.2 mol C


C molar conversion examples1
C. Molar Conversion Examples

  • How many moles of sodium chloride are in 26 g of sodium chloride?

26 g NaCl

1 mol NaCl

58.44 g NaCl

= 0.44 mol

NaCl


C molar conversion examples2
C. Molar Conversion Examples

  • How many moles of magnesium fluoride are in 85 g of MgF2?

85 g MgF2

1 mol MgF2

62.31 g MgF2

= 1.36 mol MgF2



C molar conversions1

MASS

IN

GRAMS

MOLES

NUMBER

OF

PARTICLES

C. Molar Conversions

molar mass

6.02  1023

(g/mol)

(particles/mol)


C molar conversion examples3
C. Molar Conversion Examples

  • How many molecules are in 2.50 moles of C12H22O11?

6.02  1023

molecules

1 mol

2.50 mol

= 1.51  1024

molecules

C12H22O11


C molar conversion examples4
C. Molar Conversion Examples

  • How many molecules are in 2.50 moles of C2H6?

6.02  1023

molecules

1 mol

2.50 mol

= 1.51  1024

molecules

C2H6



C molar conversion examples5
C. Molar Conversion Examples

  • Find the mass of 2.1  1024 molecules of NaHCO3.

2.1  1024

molecules

1 mol

6.02  1023

molecules

84.01 g

1 mol

= 290 g NaHCO3


C molar conversion examples6
C. Molar Conversion Examples

  • How many atoms are in 10 grams of NaCl.

1 mol

58.44 g NaCl

6.021023 atoms NaCl

1 mol

10 g NaCl

= 1.03x 1023 atoms NaCl


Mole day funnies
MOLE DAY FUNNIES

  • Q: What did Avogadro teach his students in math class?

  • Moletiplication



Why was there only one avogadro
Why was there only one Avogadro?

  • When they made him, they broke the Moled



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