Moles & Molar Mass
Name:_______________________________________________
Define “mole” _________________________________________________________________________
Calculate the molar mass (mass of a mole) for each of the following compounds
1. NaCl _____________
8. CaO _____________
15. CaCl2 _____________
2. KOH _____________
9. Ca(OH)2 _____________
16. CaF2 _____________
3. Na3PO4 ___________
10. Al2O3 _____________
17. AlCl3 _____________
4. AlPO4 ____________
11. Na2O _____________
18. CaSO4 _____________
5. SrSO4 ____________
12. Al(OH)3 ___________
19. Ca(NO3)2___________
6. NaOH ____________
13. Mg3P2 _____________
20. SrCl2 _____________
7. Na2SO4 ___________
14. Al2(SO4)3 ___________
21. Mg(NO3)2___________
22. How many grams does 4mol of calcium hydroxide weigh? _____________________________
23. What is the mass of 7.8mol of calcium hydroxide? _____________________________________
24. How many moles of sodium sulfate are there in 200g of it? __________________________________
25. What is the mass of 43mol of sodium sulfate? ____________________________________________
26. How many grams of calcium oxide make up 2.4 moles of it? _________________________________
27. How much does 3.4mol of aluminum phosphate weigh? _____________________________________
28. How many moles are contained in 432g of calcium chloride? _________________________________
29. How many moles of magnesium phosphide are present in 120.7g of it? __________________________
30. How many moles of sodium chloride (table salt) are contained in a packet of salt if each packet
weighs 2g?__________________________________________________________________________
31. Some person loves sugar (C6H12O6). They poured 50g of it into a bowl of already sweetened cereal.
How many moles of sugar did they add to the cereal?
___________________________________________________________________________________
32. It is recommended that you eat around 270g of sugar per day. How many moles is this?
____________________________________________________________________________________
33. How many moles are present in 34 grams of Cu(OH)2?
34. How much does 4.2 moles of Ca(NO3)2 weigh?
35. What is the molar mass of MgO?
36. How are the terms “molar mass” and “atomic mass” different from one another?
37. What is the mass of one mole of Americium?
38. A silicon chip used in an integrated circuit of a microcomputer has a mass of 5.68g. How many moles
of silicon are present in this chip?
39. Juglone is a dye with a chemical formula of C10H6O3. Calculate the molar mass of juglone.
40. How many moles are present in 214g of juglone?
41. Calcium carbonate, aka calcite is the principle mineral found in limestone, marble, and chalk. Calculate
the molar mass of calcium carbonate.
42. A certain sample of calcium carbonate contains 4.86 moles. What is the mass in grams of this sample?