Passage II
Hydrocarbons contain carbon (C) and hydrogen (H) atoms joined by chemical bonds (which are represented in chemical notation by short straight lines). The carbon atoms are bonded to each other to form linear, branched, or cyclic structures (examples are presented in Table 1). The boiling points of these hydrocarbons were measured and listed in Table 2, and their densities (ratio of mass to volume) are listed in Table 3.
11. Which hydrocarbons in Table 2 are gases at 10°C ?
Your Answer is
Correct Answer is D
Explanation
It is a gas at 10°C, indicating that the boiling point is lower than 10°C. Compared with table 2, it should be linear propane, cyclic propane, linear butane, and branched butane