Passage I

The molar volume of a gas is the volume occupied by 1 mole (mol; 6 × 1023 atoms or molecules) of that gas at a given pressure and temperature.

Table 1 shows how the molar volume, in L, of each of 6 gases—helium (He), neon (Ne), argon (Ar), hydrogen (H2), nitrogen (N2), and oxygen (O2)一varies with pressure, in atmospheres (atm), at a temperature of 273 Kelvins (K).

Table 2 shows how the molar volume of each of the 6 gases varies with temperature at a pressure of 1.00 atm.

3. Based on Tables 1 and 2, at any given temperature and pressure, the molar volume of which other gas is most similar to the molar volume of O2 ?

Answer and Explanation

Your Answer is

Correct Answer is B

Explanation

This kind of question allows you to look at Table 1 and Table 2 comprehensively, indicating that the same conclusion will be drawn from both Table 1 and Table 2. In order to save time, directly look at the molar volume and the molar volume of which gas at any temperature in Table 2 Oxygen is the closest