Molar Conversion Worksheet

							                               Molar Conversion Worksheet
Hint: -Start with the given value
      -Set up a conversion factor
      -Make sure your units are canceling

1. What is the mass of 1 mole of Barium acetate, Ba(C2H3O2)2?



2. What is the molar mass (g/mol) of cyclohexanol, C6H11OH?



3. How many moles are in 2.35 g of H2O?



4. If we have 0.072 g of FeCl3 then how many moles are there?



5. If there are 9.6x1015 particles of sugar in a solution then how many moles of sugar are there?



6. When there are 0.0314 moles of candy canes how many candy canes are there?



7. What volume (L) is 0.00353 moles of He gas at 0ºC and 1.0 atm?



8. A gas at STP is 4.38 L, how many moles are there?



9. How heavy (g) will 6.14x1025 atoms of gold be?



10. How many atoms are there in 10.2 L of Ar gas at STP?
Answer Key
1. What is the mass of 1 mole of Barium acetate, Ba(C2H3O2)2?
     There are: 1 Ba; 4 C; 6 H; 4 O
                  1x(137.3) + 4x(12.0) + 6x(1.0) + 4x(16.0) = 255.3 g/mol
                  1 mole x 255.3 g/mol = 255.3 g
2. What is the molar mass (g/mol) of cyclohexanol, C6H11OH?
     There are: 6 C; 12 H; 1 O
                  6x(12.0) + 12x(1.0) + 1x(16.0) = 100 g/mol

3. How many moles are in 2.35 g of H2O?
       H2O: 2x(1.0) + 1x(16.0) = 18 g/mol
       2.35 g x 1 mole = 0.13 moles
                18 g
4. If we have 0.072 moles of FeCl3 then how many grams would it weigh?
       FeCl3: 1x(55.8) + 3x(35.5) = 162.3 g/mol
       0.072 mole x 162.3 g = 11.7 g
                      1 mole
5. If there are 9.6x1015 particles of sugar in a solution then how many moles of sugar are there?
        9.6x1015 particles x 1 mole         = 1.59x10-8 moles
                          6.02x1023 particles

6. When there are 0.0314 moles of candy canes how many candy canes are there?
     0.0314 moles x 6.02x1023 candy canes = 1.89x1022 candy canes
                        1 mole

7. What volume (L) is 0.00353 moles of He gas at 0ºC and 1.0 atm?
     0.00353 moles x 22.4 L = 0.079 L
                      1 mole

8. A gas at STP is 4.38 L, how many moles are there?
      4.38 L x 1 mole = 0.196 moles
               22.4 L

9. How heavy (g) will 6.14x1025 atoms of gold be?
     6.14x1025 atoms x 1 mole          x 107.9 g = 11005 g
                     6.02x10 atoms
                             23
                                         1 mole

10. How many atoms are there in 10.2 L of Ar gas at STP?
     10.2 L x 1 mole x 6.02x1023 atoms = 2.74x1023 atoms
              22.4 L      1 mole