Question

question 1 - 9 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? after allowing a pill to be exposed to one acid concentration, place it in a different acid concentration and then measure the remaining surface area. using the same type of pill for each test, expose several pills to a single concentration of stomach acid and then measure the remaining surface area of each pill. 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. prepare solutions of different concentrations of stomach acid, measure 50 milliliters (ml) of each into different beakers, and place different types of pills of the same mass into the beakers.

Explanation:

To test the effect of stomach - acid concentration on pill solubility, we need to vary the acid concentration while keeping other factors constant. Preparing solutions of different stomach - acid concentrations and exposing the same type of pill to different concentrations allows for a fair test.

Answer:

Prepare solutions of different concentrations of stomach acid, measure 50 milliliters (mL) of each into different beakers, and place different types of pills of the same mass into the beakers.