1. Mole Bridge

2. Once Once upon a time, you lived in a town by the name of Given. You had some friends who lived in the nearby town of Askedfor. One day you decided to visit your friends in Askedfor, but the only way to get from Given to Askedfor is to cross “Old Mole Bridge.” The reason they call it “Old Mole Bridge” is that only moles are allowed to cross. So the only way to get to Askedfor is to change yourself into a mole and cross the bridge. Now, you don’t want to be a mole any longer than you have to, so after crossing the bridge, you change yourself back, and you’ve made it to Askedfor. Given Askedfor Old Mole Bridge

3. Using Periodic Table

4. How many molecules in 46.0 g Ag 2 Te? How many molecules in 46.0 g Ag 2 Te? 1) Find molar mass  2(107.9) + 127.6 = 343.4 g 2) Convert grams to moles  46.0g 3) Convert moles to molecules

5. How many grams in 1.0 X 10 25 mc I 2 ? How many grams in 1.0 X 10 25 mc I 2 ? 1) Convert molecules to moles 2) Convert moles to grams 3) Use molar mass (periodic table)

6. How many molecules in 123.4 g CO 2 ? How many molecules in 123.4 g CO 2 ? 1) Find molar mass  12.0 + 2(16.0) = 44.0 g 2) Convert grams to moles  123.4g 3) Convert moles to molecules

7. How many grams in 381.3 mols of Cu(NO 3 ) 2 ? How many grams in 381.3 mols of Cu(NO 3 ) 2 ? 1. Find molar mass 63.5 + 2(14.0) + 6(16.0) = 187.5g63.5 + 2(14.0) + 6(16.0) = 187.5g