The Mole IV. CONVERTING BETWEEN PARTICLES AND MASS.

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The Mole IV. CONVERTING BETWEEN PARTICLES AND MASS

Transcript of The Mole IV. CONVERTING BETWEEN PARTICLES AND MASS.

Page 1: The Mole IV. CONVERTING BETWEEN PARTICLES AND MASS.

The Mole

IV. CONVERTING BETWEEN PARTICLES

AND MASS

Page 2: The Mole IV. CONVERTING BETWEEN PARTICLES AND MASS.

A . Converting Particles to Mass

Since6.02 X 1023 particles = 1 mole

AND1 mole = molar mass (grams)

You can convert atoms/molecules to moles and then moles to grams! (Two step process)

You can’t go directly from atoms to grams!!!! You MUST go thru MOLES.

That’s like asking 2 dozen cookies weigh how many ounces if 1 cookie weighs 4 oz? You have to convert to dozen first!

Page 3: The Mole IV. CONVERTING BETWEEN PARTICLES AND MASS.

molar mass Avogadro’s number Grams MOLES particles

Everything must go through Moles!!!

A . Converting Particles to Mass

Page 4: The Mole IV. CONVERTING BETWEEN PARTICLES AND MASS.

A. Converting Moles to Particles

How many atoms of Cu are present in 35.4 g of

Cu?

35.4 g Cu 1 mol Cu 6.02 X 1023 atoms Cu 63.5 g Cu 1 mol Cu

= 3.4 X 1023 atoms Cu

Page 5: The Mole IV. CONVERTING BETWEEN PARTICLES AND MASS.

LEARNING CHECK!

How many atoms of K are present in 78.4 g of K?

Page 6: The Mole IV. CONVERTING BETWEEN PARTICLES AND MASS.

LEARNING CHECK!

What is the mass (in grams) of 1.20 X 1024 molecules of glucose

(C6H12O6)?


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The MOLE. The Mole Mole: the amount of a substance that contains as many particles as there are in exactly 12g of carbon-12 A mole is similar to a dozen.

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