Gas molecule mass issue
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What are the effects of large gas molecule mass on gases? For example, things like high temperature during compression due to a large molecular mass
At the same temperature and pressure, substances with a high molecular weight are difficult to compress.
With a high molecular weight, the heat of compression should be large, right? But it is not difficult to compress. For example, compared to hydrogen, oxygen is more compressible. At the same pressure, media with a higher molecular weight have a higher saturation temperature. But larger molecular weights require more work to be compressed.
This post was last edited by ylb913 on 2016-5-22 07:05. What are the effects of large molecular mass on gases? ——Answer only this question; the others, such as those that are not fundamentally related to it, do not need to be addressed. Let’s explain it in simple terms: We all know that humidity is high and air pressure is low in summer, while humidity is low and air pressure is high in winter. Why is that? Since the molecular weight of water is only 18, while the average molecular weight of air is around 28, the higher the water vapor content in the atmosphere, the lower the atmospheric pressure. This follows the same principle as that for liquid columns: the lower the density of a liquid, the lower its pressure. The concept of gas columns isn’t discussed, but in fact, the pressure of gases is also caused by gravity.