Rank these real gases according to how closely they resemble an ideal gas. co, n2, ne, he, nh3

He is the closest. Then:

Ne, N2, CO, NH3.

NH3 is the least closest to ideal.

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.