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ACT Science – Section 4 – Test 6

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ACT Science – Section 4 – Test 6

Justice August 20, 2017

ACT Science – Section 4 – Test 6

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Question 1 of 5

1. Question
Based on Figure 2, if 13 g of Kr had been added to the 6 L vessel, the pressure would have been:
- A. less than 200 torr.
- B. between 200 torr and 400 torr.
- C. between 400 torr and 600 torr.
- D. greater than 600 torr.
Correct

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Question 2 of 5

2. Question
Suppose the experiments had been repeated, except with a 5 L vessel. Based on Figures 1 and 2, the pressure exerted by 7 g of CO₂ would most likely have been:
- A. less than 500 torr.
- B. between 500 torr and 1,000 torr.
- C. between 1,000 torr and 1,500 torr.
- D. greater than 1,500 torr.
Correct

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Question 3 of 5

3. Question
Based on Figures 1 and 2, for a given mass of O₂ at 22°C, how does the pressure exerted by the O₂ in a 6 L vessel compare to the pressure exerted by the O₂ in a 3 L vessel? In the 6 L vessel, the O₂ pressure will be:
- A. ½ as great as in the 3 L vessel.
- B. the same as in the 3 L vessel.
- C. 2 times as great as in the 3 L vessel.
- D. 4 times as great as in the 3 L vessel.
Correct

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Question 4 of 5

4. Question
Which of the following best explains why equal masses of O₂ and CO₂ at the same temperature and in the same-size vessel had different pressures? The pressure exerted by the O₂ was:
- A. less, because there were fewer O₂ molecules per gram than there were CO₂ molecules per gram.
- B. less, because there were more O₂ molecules per gram than there were CO₂ molecules per gram.
- C. greater, because there were fewer O₂ molecules per gram than there were CO₂ molecules per gram.
- D. greater, because there were more O₂ molecules per gram than there were CO₂ molecules per gram.
Correct

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Question 5 of 5

5. Question
Suppose the experiment involving O₂ and the 6 L vessel had been repeated, except at a room temperature of 14°C. For a given mass of O₂, compared to the pressure measured in the original experiment, the pressure measured at 14°C would have been:
- A. less, because pressure is directly proportional to temperature.
- B. less, because pressure is inversely proportional to temperature.
- C. greater, because pressure is directly proportional to temperature.
- D. greater, because pressure is inversely proportional to temperature.
Correct

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ACT Science - Section 4 - Test 6

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