1. 1/9/18 Opener
How many moles are there if you have 3.08 x particles of Ag?
Please get out your weekend homework assignment, periodic table, & a calculator.

2. Atoms, Mass, & the Mole
SWBAT convert between grams, moles, & Atoms to complete 2 step problems

3. Atoms to Grams Step 1: Convert Atoms to Moles
1 mole = 6.02 x 1023
Divide by Avogadro’s number
Step 2: Convert Moles to Grams
Find the molar mass: X g = 1 mole
Multiply by the molar mass
Given number of particles
6.02 x 1023
1 mole
X grams
1 mol

4. Practice Problem What is the mass of 4.08 x 1022 particles of NaCl?
How many particles are in a mole?
What is the molar mass of NaCl?

5. Grams to Atoms Step 1: Convert Grams to Moles
Find the molar mass: X g = 1 mole
Divide by the molar mass
Step 2: Convert Moles to Atoms
1 mole = 6.02 x 1023
Multiply by Avogadro’s number
Given grams
1 mol
6.02 x 1023
1 mole
X grams

6. Practice Problem How many particles make up 452 grams of HF?
What is the molar mass of HF?
How many particles are in a mole?