Examples:
3. If you have 35.5 grams of aluminum, how many moles of it do you have?
4. What is the mass in grams of 1.42 moles of NaCl?
Practice Problems:
5. What is the mass in grams of 6.31 moles of copper metal?
6. You have 123 grams of carbon dioxide (CO₂). How many moles is that?
7. There are 4.85 x 1029 atoms of lead. How many moles is that?
8. There are 5.89 moles of methane gas (CH₂). How many molecules is that?
9. What is the mass in kilograms of 15.6 moles of calcium chloride (CaCl₂)?
10. You have 125 mg of table salt (NaCl). How many moles is that?