Exam

6 cards   |   Total Attempts: 188
  

Cards In This Set

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  1. A weather balloon with a 2-meter diameter at ambient temperature holds 525 grams of helium. What type of electronic probe could be used to determine the pressure inside the balloon?
    1. ? spectrophotometric
    2. ? calorimetric
    3. ? barometric
    4. ? thermometric
Barometric
  1. Which would be most appropriate for collecting data during a neutralization reaction?
    1. ? a thermometer
    2. ? a statistics program
    3. ? a pH probe
    4. ? a graphing program
A pH probe
  1. A scientist observed changes in the gas pressure of one mole of a gas in a sealed chamber with a fixed volume. To identify the source of the changes, the scientist should check for variations in the
    1. ? temperature of the chamber.
    2. ? air pressure outside the chamber.
    3. ? isotopes of the gas.
    4. ? molecular formula of the gas.
    temperature of the chamber.
    1. Electrical fires cannot be safely put out by dousing them with water. However, fire extinguishers that spray solid carbon dioxide on the fire work very effectively. This method works because carbon dioxide
      1. ? displaces the oxygen.
      2. ? renders the fire’s fuel non-flammable.
      3. ? forms water vapor.
      4. ? blows the fire out with strong wind currents.
    Displaces the oxygen.

    1. In the cubic crystal shown, if each edge is 2.0 angstroms in length, what is the diagonal distance, d, between atoms 1 and 3? (Assume that the Pythagorean theorem can be used to solve this problem.) ? Å ? 2.5 Å ? Å ? A
      In the cubic crystal shown, if each edge is 2.0 angstroms in length, what is the diagonal distance, d, between atoms 1 and 3? (Assume that the Pythagorean theorem can be used to solve this problem.)
      1. ? In the cubic crystal shown, if each edge is 2.0 angstroms in length, what is the diagonal distance, d, between atoms 1 and 3? (Assume that the Pythagorean theorem can be used to solve this problem.) ? Å ? 2.5 Å ? Å ? A Å
      2. ? 2.5 Å
      3. ? In the cubic crystal shown, if each edge is 2.0 angstroms in length, what is the diagonal distance, d, between atoms 1 and 3? (Assume that the Pythagorean theorem can be used to solve this problem.) ? Å ? 2.5 Å ? Å ? A Å
      4. ? In the cubic crystal shown, if each edge is 2.0 angstroms in length, what is the diagonal distance, d, between atoms 1 and 3? (Assume that the Pythagorean theorem can be used to solve this problem.) ? Å ? 2.5 Å ? Å ? AA
    AA
    1. In order to advance to the level of a theory, a hypothesis should be
      1. ? a fully functional experiment.
      2. ? in alignment with past theories.
      3. ? obviously accepted by most people.
      4. repeatedly confirmed by experimentation.