What is the discovery and explanation of weighing air?

Weighing air is the performance of measuring air. It is common to measure the volume of gas. Weighing is impossible, but it needs to be converted first.

The average molecular weight of air is 29. That is, the molar mass of air is 29 g/mol. According to the approximate calculation of the standard state, that is, 29 grams /22.4 liters. According to the experimental requirements, x gram is changed into volume y liter =(29/X)×22.4.

Because air has weight and buoyancy at the same time, if less air rushes into the balloon, your equipment may not react or reflect it obviously. If more air rushes into the balloon, the balloon will expand greatly and have great buoyancy, and you may not get the expected experimental results.

Extended data:

One of Galileo's most ingenious experiments was to measure air quality. In fact, Aristotle came up with this idea, and Galileo just followed it and did it more carefully. Galileo also mentioned the Archimedes buoyancy effect of the surrounding air, that is, its influence on the air must be considered. Galileo discovered that the density of air is about 1/400 of that of water. Today we know that the value is 1/773, but it is quite good to get such a result.

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