The stomach produces hydrochloric acid as a means of killing bacteria that may enter the body with food. Magnesium hydroxide is a compound found in antacids, medicines used to neutralize stomach acid. The amount of acid neutralized by 3 different brands of antacids are shown in Table 1.
The scientists diagrammed the enzymatic (chemical) activity of the three antacids. The hydrochloric acid is represented by the lighter circles; the magnesium hydroxide is represented by the darker circles, as shown in Figure 1.
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Question 1 of 5
1. Question
Question 1:
Based on the passage, what is most likely the pH of the stomach?
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Question 2 of 5
2. Question
Question 2:
Based on Table 1, which antacid is the most effective, per gram?
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Question 3 of 5
3. Question
It was determined that relatively small amounts of antacid Y functionally neutralized large volumes of hydrochloric acid. Based on this and the information provided, which of the following could be the diagram of antacid Y?
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Question 4 of 5
4. Question
Question 4:
Which of the following generalizations about bacteria can be inferred from the information provided?
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Question 5 of 5
5. Question
Question 5:
If the researchers had used only 1.0 gram of initial antacid X during their trials, what would be the approximate volume of acid neutralized?
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