Michael Wants To Test The Effect Of Stomach Acid Concentration On The Solubility Of A Particular Oral Medication. Which Experimental Design Setup Would Best Help Him Answer His Question?

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Michael wants to test the effect that different concentrations of stomach acid will have on the dissolution of a particular kind of oral medication. As he sets up and completes his experiment, which of the following experimental designs would be most likely to help him answer his question?

  • Allow several pills to soak in different amounts of acid of a single concentration and then measure the amount of dissolution on each.
  • Prepare solutions of different acid concentrations, measure 50 mililiters of each into different beakers, and place the same type of pill of the same mass into the beakers.
  • After allowing a pill to be exposed to one acid concentration, place it in different acid concentrations, and then measure the surface area that is dissolved.
  • Prepare solutions of different acid concentrations, measure 50 milliliters of each into different beakers, and place different types of pills of the same mass into the beakers.
Using the same type of pill for each test, expose several pills to different concentrations of stomach acid and then measure the remaining surface area of each pill.
Michael wants to test the effect of stomach acid concentration on the solubility of a particular oral medication. Which experimental design setup would best help him answer his question?
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