Passage VII

A material's thermal conductivity is a measure of its ability to transport energy from one location to another. Tables 1 and 2 below list the thermal conductivities (in ; μJ = a unit of energy) of various gases at different temperatures (in °C). Table 3 below lists the masses, in atomic mass units (amu), of the atoms making up the molecules of the gases.

36. One of the gases listed in the tables has a thermal conductivity of 182 at 30℃. What is the identity of the gas?

Answer and Explanation

Your Answer is

Correct Answer is H

Explanation

From table 1 & table 2, it can be seen that the thermal conductivity of a substance increases with the increase of temperature, so the thermal conductivity at 30 degrees should be between 20 degrees and 40 degrees, and those that meet this condition Should be C3H8:171<182<192