Practice Quiz

SAT Chemistry - Question List

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6. A neutral element has 45 neutrons per atom and a mass number of 80. What is the identity of this element?
  1. Chlorine
  2. Bromine
  3. Mercury
  4. Rhodium
  5. Calcium
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7. Which of the following elements has the largest atomic radius?
  1. Lithium
  2. Boron
  3. Fluorine
  4. Potassium
  5. Rubidium
  6. Oxygen
  7. Chlorine
  8. Bromine
  9. Iodine
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8.

Consider the following system at equilibrium:

2CO(g) + O2(g) --> 2CO2(g)

According to Le Chatelier’s Principle, what will occur when the concentration of CO2(g) is increased?

  1. The concentration of O2 alone will increase
  2. The concentration of CO alone will increase
  3. The concentration of both O2 and CO will increase
  4. The concentration of O2 and CO will decrease
  5. There will be no change of concentrations
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9. What is the concentration of H+ ions in a solution that has an OH- concentration of 1x10-4 molar?
  1. 1x10-10 molar
  2. 1x10-9 molar
  3. 1x10-8 molar
  4. 1x10-5 molar
  5. 1x10-4 molar
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10. Which of the following elements does NOT exist as a diatomic molecule at room temperature?
  1. Hydrogen
  2. Oxygen
  3. Neon
  4. Fluorine
  5. Bromine
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