Practice Quiz

CLEP Chemistry Practice Test - Question List

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41. The equation below shows ammonia dissolving in water:

NH3(aq) + H2O(I) ↔ NH4+(aq) + OH-(aq)

Why is water considered an acid when ammonia is dissolved in it?
  1. Water acts as a proton donor.
  2. Water acts as a proton acceptor.
  3. Water contains hydrogen atoms.
  4. Water has a 2:1 ratio of hydrogen to oxygen.
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42. How many atoms are in a 12.0 g sample of lithium?
  1. 1.74 X 1023 atoms
  2. 6.02 X 1023 atoms
  3. 1.04 X 1024 atoms
  4. 7.24 X 1024 atoms
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43. An equation for an equilibrium reaction is shown below:

SO2(g) + NO2(g) ↔ SO3(g) + NO(g) + 41.7 kJ

Which of the following changes in reaction conditions will not shift the equilibrium of the system?
  1. an increase in the pressure
  2. an increase in the temperature
  3. a decrease in the SO3 concentration
  4. a decrease in the NO2 concentration
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44. The three main types of nuclear radiation are alpha, beta, and gamma. Which of the following lists these types of radiation from highest penetrating power to lowest penetrating power?
  1. alpha, gamma, beta
  2. beta, alpha, gamma
  3. beta, gamma, alpha
  4. gamma, beta, alpha
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45. Water cools from 2°C to -2°C. During this time, what happens to the motion of the molecules?
  1. The motion of the molecules stops.
  2. The motion of the molecules increases.
  3. The motion of the molecules decreases.
  4. The motion of the molecules remains the same.
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