Review Worksheet #3
1. What is the frequency and energy of green light which has a wavelength of 510 nm?
2. Consider the following reaction:
Zn(s) + HCl(aq) → H2(g) + ZnCl2(aq)

What volume of hydrogen gas can be produced from the reaction of 5.0 grams of solid zinc
and excess hydrochloric acid at STP?
3. A steel tank is holding hydrogen gas at a pressure of 7.5 atm. If the temperature of the tank
increases from 25 ºC to 50 ºC, what is the new pressure of the hydrogen in the tank?
4. Write out the short-hand (noble gas) electron configuration for:
 Bromine
 Uranium
 Radium
5. Identify the element corresponding to the following configurations:
 1s22s22p4
 1s22s22p63s23p64s1
 1s22s22p63s23p64s23d7
6. Name the element(s) that have:
 Electrons in a 4s orbital but not in 3d
 Electrons in a partially-filled 4d level
 Only unpaired electrons in a 6p orbital
7. What would be the final temperature if 3.31 x 103 Joules were added to 18.5 grams of water at
22.0oC?
8. A sample of lead, specific heat 0.138J/gCo, released 1.20 x 103J when it cooled from 93.0oC to
29.5oC. What was the mass of this sample of lead?
9. What will be the final concentration of a solution prepared by dissolving the indicated solute in
enough water to produce the indicated volume of solution?
 15.4 g of strontium acetate filled up to 340 mL.
 176.2 g of Iron (III) sulfite filled up to 1.42 liters.
 3.22 g of copper (I) chlorate filled up to 40.0 liters.
10. What would be the percent concentration of each of the following solutions?
 54.0 g of AgNO3 g is dissolved in 128 g of water.
 4.22 g of K2CO3 is dissolved in 426 mL of water.
 0.762 g of ZnF2 is dissolved in 1.30 liters of water.
11. A 2.63 g NaOH are dissolved in 156 mL of solution. Determine the OH- concentration & the pH.
12. In an experiment conducted at 74°C, the equilibrium concentrations of reactants and products
for the equation shown below were [CO] = 1.2x10-2 M, [Cl2] = 0.054 M and [COCl2] = 0.14 M.
CO (g) + Cl2 (g) ↔COCl2 (g)

What is the equilibrium expression for this reaction?
13. In 5.49 seconds, 1.20 g of argon-35 decays to only 0.15 g. What is the half-life of argon-35?