Arkansas State University
Department of Chemistry
and Physics
Worksheet 2
Moles

1. Calculate the molar mass for MgCO3.  How many moles of MgCO3 are in 100 g of MgCO3?

2. How many grams of Cu(OH)2 are in 4.6 mol Cu(OH)2?

3. How many atoms of Cu are in 4.6 mol Cu(OH)2?

4. How many Cu atoms are in 25.7 g of Cu(OH)2?

5. How many mol of Cu(OH)2 can be made from 4.6 x 1025 atoms of Cu?

6. How many g of Cu(OH)2 can be made from 4.6 x 1025 atoms of Cu?

7. How many mol of Cu(OH)2 can be made from 4.6 x 1025 atoms of O?

8. How many g of Cu(OH)2 can be made from 4.6 x 1025 atoms of O?

answers