A solution of pure water is placed on the left side of a chamber. A solution of 10 mol/L glucose in water is placed on the right side of the chamber. A semi-permeable membrane that only permits water to pass is placed between the two chambers
After five minutes there has been a net movement of water to the right chamber. Which of the following best explains why?
A) The water moves because it is attracted to the negatively charged glucose molecules.
B) The water moves to absorb the free glucose molecules.
C) The water moves to evenly distribute the pressure of the glucose molecules.
D) The water moves to reduce the difference in the concentration of the two solutions.
D
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Using a self-contained breathing apparatus is an example of which of the following safety control systems?
A) Administrative control B) Personal protection control C) Engineering control D) None of the above
You are sent to a diving emergency and have a single victim complaining of acute dyspnea, altered mental status, dizziness, and chest pain. Upon arrival at the scene, you are told that the diver probably ascended too rapidly. What condition most is likely occurring?
A) Arterial gas embolism B) Nitrogen narcosis C) Decompression sickness D) Barotrauma