Chem 210
Review Assignment
Name:
Lab:
Solve the following problems using Dimensional Analysis, where appropriate. Round to the
correct number of significant figures. Show all of your work and circle your answer.
1. Calculate the volume in gallons of a 456-pound sample of corn syrup (d = 1.36 g/mL).
2. How many moles of N atoms are in 13.45 g of ammonium sulfate?
3. Determine the number of potassium atoms in 1.803 g of potassium carbonate.
4. What mass of Ca(NO3)2 will contain 3.22 x 1024 oxygen atoms?
5. Write the correct empirical formula for each of the following:
a. C4 H8 O2
b. Fe2 S3 O12
c. C1.5 H4 O0.5
d. (C4 H8 O2 )2
a. __________
b. __________
c. __________
d. __________
6. Determine the % by mass of each element in molybdenum(V) chloride.
7. Determine the empirical formula for barium dithionite which contains 46.17g of barium,
32.27g of oxygen, and 32.27g of sulfur:
8. List the major (strongest) intermolecular attractive force present for each molecule.
NH3__________________________________________________________________________
H2S__________________________________________________
HCl__________________________________________________
CH4__________________________________________________________________________
9. Explain why F2 and Cl2 are gases at room temperature, but Br2 is a liquid, and I2 is a solid.
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