Practice Quiz

CLEP Chemistry Practice Test - Question List

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111. What is the volume of 0.25 mol of ammonia gas (NH3) at 1.00 atmand 273 K?
  1. 0.33 L
  2. 5.6 L
  3. 95 L
  4. 1530 L
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112. Which of the following statements best explains why ice floats on water?
  1. Water has a higher specific heatthan ice.
  2. Ice has the same molecular massas water.
  3. Heat is absorbed when water changes from the solid state to the liquid state.
  4. Hydrogen bonding causes water to be less dense in the solid state than in the liquid state.
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113. Which of the following did scientists learn about the atom from Rutherford’s gold foil experiment?
  1. Atoms combine in simple ratios to form compounds.
  2. Electrons travel around the nucleus of an atom in concentric circular paths.
  3. The mass of an atom and itspositive charge are concentrated in the nucleus.
  4. The atomic mass of an atom is equal to the number of protons and neutrons in the nucleus.
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114. Which of the following elements is a metalloid?
  1. magnesium
  2. silicon
  3. phosphorus
  4. cobalt
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115. Barium and iodine combine to form an ionic compound. What is the chemical formula for this compound?
  1. BaI
  2. BaI2
  3. Ba2I
  4. Ba2I2
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