Mole Worksheet (Dimensional Analysis) #1

Mole Worksheet (Dimensional Analysis) #1
I. What is the formula weight for each of the following compounds?
1. carbon tetrachloride
2. potassium cyanide
3. aluminum hydroxide
4. Iron(III) sulfate
5. sulfur hexafluoride
II. How many moles are represented by each of the following amounts?
1. 17.0 g of nickle
2. 187.6 g of calcium hydroxide
3. 65.8 g of dinitrogen tetroxide
4. 2.84 g of copper(I) sulfate
5. 0.008673 g of sulfur trioxide
III. What is the weight (in grams) for each of the following compounds or elements?
1. 7.24 moles of silver phosphate
2. 2.88 moles of diphosphorous pentoxide
3. 0.0009273 moles of zinc bicarbonate
4. 154.8 moles of silicon tetraiodide
5. 88.624 moles of silver
IV. Answer the following questions.
1. How many atoms are in 6.28 moles of aluminum?
2. How many atoms are in 90.43 moles of copper?
3. How many atoms in 7.64 moles of barium?
4. How many molecules in 3.72 moles of sulfur dioxide?
5. 78.54 g of nitrogen dioxide contain how many molecules?
6. How many moles of water are represented by 8.33 x 10 18 molecules of water?
7. 76.4 g of water contain how many molecules?
8. 76.4 moles of oxygen difluoride contain how many molecules?
9. How many grams does 8.92 x 10 24 atoms of tin weigh?
10. What is the weight in grams of 4.28 x 10 20 molecules of bromine trifluoride?

Solutions
I. II.
Check
1) 154.0 g/mol 1) 0.290 mol Ni
2) 65.1 g/mol 2) 2.53 mol Ca(OH)2
3) 78.0 g/mol 3) 0.715 mol N2O4
4) 400.1 g/mol 4) 0.0127 mol Cu2SO4
5) 146.0 g/mol 5) 1.08 x 10 -4 mol SO3
III. IV.
1) 3,030 g Ag3PO4
1) 3.78 x 1024 atoms Al
2) 409 g P2O5
2) 5.44 x 1025 atoms Cu
3) 0.1738 g Zn(HCO3)2
3) 4.60 x 1024 atoms Ba
4) 82,930 g SiI4
4) 2.24 x 1024 atoms SO2
5) 9,563 g Ag 5) 1.03 x 1024 molecules NO2
6) 1.38 x 10-5 moles H2O
7) 2.55 x 10 24 molecules H2O
8) 4.60 x 10 25 molecules OF2
9) 1.76 x 10 3 g Sn
10) 0.0973 g BrF3