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Science · Drill 13

Science practice 13

15 questions ~9 min recommended
⏱ 00:00
Score
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I appreciate your detailed instructions, but I need to clarify an important issue with this request. The passage you've provided is **not OCR'd text with embedded question markers**. Instead, it consists of: 1. **Scientific charts and diagrams** (vapor pressure graphs, functional group tables) 2. **A data table** with molecular information 3. **No underlined phrases** or standalone digit markers indicating where questions apply The QUESTIONS section lists 15 multiple-choice items, but without: - Underlined text in the passage - Standalone digit markers (like "1", "2", "3") showing question locations - Clear indication of which passage elements each question references **To properly complete this task, I would need:** 1. The original passage with **explicit markers** (standalone digits or clearly identified underlined portions) showing where each of the 15 questions applies 2. Clarification on which chart elements, table cells, or text passages correspond to which questions Could you provide the passage in its original OCR format with the question markers embedded? That will allow me to correctly apply the and formatting rules you've outlined.

As a liquid evaporates, the vapors on the surface of the liquid exert a vapor pressure. Vapor pressure varies with the liquid's temperature.

When vapor pressure equals the surrounding atmospheric pressure, boiling occurs. The normal boiling point of a liquid is defined as the temperature at which vapor pressure is equal to the standard atmospheric pressure of 760 mmHg (1 atm). If atmospheric pressure changes, a liquid's boiling point will also change.

Figure 4.3 illustrates the relationship between vapor pressure and temperature for four organic compounds belonging to the alkane group. The normal boiling point is indicated by a horizontal dashed line.

Figure 4.3

Source: http://wiki.chemprime.chemeddl.org.

Organic compounds are composed of various functional groups attached to a hydrocarbon backbone. A functional group is a specific grouping of atoms that exhibits a characteristic set of properties. These properties remain consistent, regardless of the overall size of the compound.

Figure 4.4 compares the normal boiling points of organic compounds of increasing size for eight different functional groups, including the alkane group.

Figure 4.4

Table 4.1 lists the types of chemical bonds each of the eight functional groups are capable of forming. Stronger bonds are more difficult to break, thus requiring a higher temperature for phase changes.

TABLE 4.1 Functional Group Bonds

Table 4.2 lists characteristics of four common organic compounds with similar molecular weights. The temperatures listed represent the normal boiling point for each molecule.

TABLE 4.2 Molecular Weight

1. A compound's normal boiling point is the:

2. According to Figure 4.3, an organic compound will boil at a lower temperature if:

3. At a vapor pressure of 50 mmHg, which alkane in Figure 4.3 would boil closest to 0°C?

4. According to Figure 4.3, what vapor pressure will cause pentane's boiling point to be closest to 40°C?

5. What is the best approximation for the normal boiling point of octane in Figure 4.3?

6. According to Figure 4.4, the alkanes exhibit normal boiling points most similar to which other group?

7. Based on the data in Figure 4.4, a 2-carbon alcohol would exhibit a normal boiling point closest to that of a:

8. Based on the data in Figure 4.4, which type of bond listed in Table 4.1 is the weakest?

9. Caproic acid is a carboxylic acid with a molecular formula of C6H12O2. Which of the following temperatures is closest to the normal boiling point of caproic acid?

10. Based on the data in Figure 4.4, which of the following lists the bonds in Table 4.1 from the highest to the lowest boiling point required to break them?

11. Which of the following generalizations about the relationship between an organic compound's molecular weight and its boiling point is best supported by the data in Table 4.2?

12. Based on the data in Figure 4.4, n-Butanol (see Table 4.2) most likely contains which functional group?

13. Which of the four compounds in Table 4.2 is most likely to contain double hydrogen bonds?

14. Based on the information in the passage, which of the following can be inferred about the type of bonds in an organic compound?

15. Which of the following generalizations is best supported by the data in Figures 4.3 and 4.4?

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