Practice Quiz

CLEP Chemistry Practice Test - Question List

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31. Which of the following molecules has the same empirical formula as glucose (C6H12O6)?
  1. butane (C4H10)
  2. ethanoic acid (C2H4O2)
  3. propene (C3H6)
  4. sucrose (C12H22O11)
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32. 1S22S22P63S23P64S1 is the electron configuration for which element?
  1. aluminum (Al)
  2. argon (Ar)
  3. potassium (K)
  4. sodium (Na)
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33. What is the mass of one mole of helium gas?
  1. 2 g
  2. 4 g
  3. 8 g
  4. 22 g
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34. Which of the following correctly describes molecules of two different gases if they are at the same temperature and pressure?
  1. They must have the same mass.
  2. They must have the same velocity.
  3. They must have the same average kinetic energy.
  4. They must have the same average potential energy.
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35. Aluminum reacts with oxygen gas to form aluminum oxide, as shown in the reaction below:

4Al(s) + 3O2(g) → 2Al2O3(s)

How many grams of aluminum are needed to completely react with 192 g of oxygen gas?
  1. 27.0 g
  2. 102 g
  3. 216 g
  4. 432 g
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