Mole calculations 1
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Mole Calculations 1. Chemical Calculations. Atoms and molecules are extremely small. If they are so small and so light, how can we weigh them?. We weigh large numbers of them. 1.00 g H = 6.02 x 10 23 atoms = 1.00 mole This is called Avogadro’s number.

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Mole Calculations 1

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Mole calculations 1

Mole Calculations 1


Mole calculations 1

Chemical Calculations

Atoms and molecules are extremely small.

If they are so small and so light, how can we weigh them?

We weigh large numbers of them.


Mole calculations 1

1.00 g H = 6.02 x 1023 atoms = 1.00 mole

This is called Avogadro’s number


Mole calculations 1

1 dozen donuts = 12 donuts

1 century = 100 years

1 millennium = 1000 years

1.00 mole= 6.02 x 1023 particles


Mole calculations 1

TThe mole is a large number of particles

pparticle

AatomelementCu 6.02 x 1023 atoms/mole

MmoleculecovalentCH4 6.02 x 1023 molecules/mole

FFormula UnitionicNaCl 6.02 x 1023 FUs/mole


Mole calculations 1

1. Convert 2.5 x 1025 at C to moles

2.5 x 1025 at C

x 1 mole

= 42 moles C

6.02 x 1023 at C


Mole calculations 1

2. Convert 16.3 moles CO2 to molecules

16.3 moles

x 6.02 x 1023 molecules

= 9.81 x 1024 molecules

1mole


Mole calculations 1

3. Convert 8.9 x 1024 molecules CO2 to moles

x 1 mole

8.9 x 1024 molecules

= 15 moles CO2

6.02 x 1023 molecules


Mole calculations 1

4. Convert 28 moles NaCl to Formula Units

x 6.02 x 1023 FU

28 moles

= 1.7 x 1025 FUs

1mole


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