The Mole.

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Presentation transcript:

The Mole

1 dozen eggs = 12 eggs

Conversion factors make measurements easier to deal with! 1 dozen eggs = 12 eggs

1 dozen eggs = 12 eggs 1 mole = 6.02 x 1023 atoms

1 mole = 6.02x1023 atoms, molecules, or particles = 602, , , , , , , 000 000 000 000 000 000 000

Who’s responsible for this madness?! 1 mole = 6.02 x 1023 atoms Amedeo Avogadro

The mole provides chemists with an easy way of figuring out how many atoms/molecules/or particles of a substance are in a sample. 1 mole of He = 6.02 x 1023 atoms of He 1 mole of Al = 6.02 x 1023 atoms of Al 1 mole of Ar = 6.02 x 1023 atoms of Ar

Molar Conversions Using the Mole:

How many atoms are in 1.5 moles of Carbon (C)?

How many atoms are in 2.0 g of aluminum (Al)?

What is the mass of 7.5 x 1022 atoms of Nickel (Ni)?

WHITEBOARD PRACTICE

How many atoms are 2.5 moles of Sodium (Na)?

How many moles are in 25 g of Nitrogen (N)?

How many atoms are in 12.0 g of Helium (He)?