AVOGADRO'S NUMBER WORKSHEET
Name ______________________________ Date ______________________ Period ______
1. How many formula units would there be in a 54.3 gram sample of sodium nitrate?
2. How many atoms of copper are there in 1.00 kg of pure copper?
3. How much would 3.42 X 1023 formula units of mercuric oxide weigh in grams?
4. Which would weigh more--6.54 X 1022 formula units of aluminum chloride or 7.34 X 1022
formula units of stannous fluoride?
5. How many molecules are present in 0.00115 grams of carbon dioxide?
6. How many atoms of zinc are required to weigh 5.40 ng?
7. I have 3.45 X 1024 molecules of water. How much would this weigh in pounds?
(b) How many moles are there in this amount of water?
8. How many moles are represented by 8.27 X 1023 molecules of ANY MOLECULAR
SUBSTANCE?
9. Which would be more moles of a molecular compound--6.57 X 1023 molecules or 6.59 X
1023 molecules. How do you know?
10. How many DIATOMIC MOLECULES of chlorine were there be in 28.0 grams of chlorine
gas?
(b) How many ATOMS of chlorine would be present in this same amount?
11. How many carbon atoms would there be in 200 grams of aluminum carbonate?
12. If there are known to be 7.93 X 1024 atoms of oxygen present in a sample of magnesium
sulfate, how much does the sample of magnesium sulfate weigh in pounds?
13. How many oxygen atoms are there in 2.4 pounds of calcium acetate?
14. How many chlorine atoms are there in 45 grams of mercurous chlorate?
15. If there are known to be 1.06 X 1024 OXYGEN ATOMS in a sample of barium
permanganate, what is the mass of the entire sample of barium permanganate
in grams?
16. If there are known to be 9.76 X 1025 chlorine atoms in a sample of aluminum chloride,
would the entire sample weigh more than 15 pounds?
17. How many oxygen atoms are there in 170 grams of cesium phosphite?