Balloon inflation process

The balloon pumping tutorial is as follows:

1, prepare a pump, a balloon and a hand stick.

2. Find the protruding part of the balloon tail and insert the pump from here.

3. Start pumping, pay attention to the size of the balloon when pumping, and don't burst the balloon.

4. After the balloon is filled with gas, press and hold the air inlet, and then install the hand stick.

What is the composition of the air in the balloon?

It is mainly composed of nitrogen, oxygen, rare gases (helium, neon, argon, krypton, xenon, radon and helium), carbon dioxide and other substances (such as water vapor and impurities).

Air refers to the mixture of gases in the earth's atmosphere. Air is a mixture, mainly composed of nitrogen, oxygen and rare gases (helium, neon, argon, krypton, xenon, radon and helium).

Carbon dioxide and other substances (such as water vapor, impurities, etc. ).

The volume fraction of nitrogen is about 78%, and that of oxygen is about 2 1%.

The volume fraction of rare gases (helium, neon, argon, krypton, xenon, radon and helium) is about 0.934%, and the volume fraction of carbon dioxide is about 0.04%.

The volume fraction of other substances (such as water vapor and impurities) is about 0.002%.

The composition of air is not fixed. With the change of altitude and air pressure, the composition ratio of air will also change.

However, people always think that air is a single substance. Later, French scientist lavoisier first came to the conclusion that air is composed of oxygen and nitrogen through experiments.