Download Converting with Avogadro`s Number File

Bell Ringer
• Convert 6.3 grams of Ag to moles. Ag atomic
mass is 107.8682
• Convert 7 moles of Kr to grams. Kr atomic
mass is 83.798
• How many cm are in one meter?
• How many km are in 1200 meters?
• Draw what Niels Bohr purposed the atom to
look like and what was this model called?
Converting with Avogadro's
Number
Mr. Schlamb
Review
• Avogadro’s number: 6022*10^23
• This is the number of atoms in one mole of
substance
Conversions
• We can do conversions with Avogadro’s
number.
• We can use Avogadro’s number of atoms of an
element from moles
• We can also use it to find the amount of
element in moles from atoms
See the book
• Open the book to page 86 and 87
• In the first problem we are finding the amount
in moles of Ag from the number of atoms.
• Lets work this together on the board
Next problem
• In the next problem we are finding the mass in
grams of Cu from the amount of atoms of Cu
• Lets work this one together on the board as
well
Questions