Question

Почему на высоте 50 км от Земли в атмосфере содержится 3% водорода, а на высоте 100 км – 95%?

Answer 1

Н- самый лёгкий газ поэтому он скапливается на верху

Answer 2

The Composition of the Atmosphere at Different Altitudes

The composition of the Earth's atmosphere varies with altitude. At different heights, the concentration of gases can change due to various factors such as gravity, temperature, and chemical reactions. Specifically, you asked why the atmosphere at 50 km altitude contains 3% hydrogen, while at 100 km altitude, it contains 95% hydrogen.

Atmospheric Composition at 50 km Altitude At an altitude of 50 km, the atmosphere is still within the Earth's mesosphere. The mesosphere is the layer of the atmosphere located above the stratosphere and below the thermosphere. It is characterized by decreasing temperatures with increasing altitude.

The composition of the atmosphere at this altitude is primarily nitrogen (N2) and oxygen (O2), which together make up about 99% of the total atmospheric composition. Other trace gases, including argon (Ar), carbon dioxide (CO2), neon (Ne), helium (He), and methane (CH4), are present in smaller amounts.

Regarding hydrogen (H2), it is not a significant component of the Earth's atmosphere at this altitude. The concentration of hydrogen at 50 km is relatively low, around 0.03%.

Atmospheric Composition at 100 km Altitude At an altitude of 100 km, the atmosphere enters the thermosphere, which is the uppermost layer of the Earth's atmosphere. The thermosphere is characterized by high temperatures due to the absorption of solar radiation.

At this altitude, the composition of the atmosphere changes significantly. The concentration of hydrogen increases to around 95%, while the concentration of other gases, such as nitrogen and oxygen, decreases significantly. This change in composition is primarily due to the dissociation and ionization of molecules caused by the intense solar radiation in the thermosphere.

It's important to note that the concentration of hydrogen at 100 km is not constant and can vary depending on factors such as solar activity and the presence of other gases. However, the general trend is that hydrogen becomes the dominant gas at this altitude.

Conclusion

In summary, the composition of the Earth's atmosphere varies with altitude. At 50 km altitude, the atmosphere contains a relatively low concentration of hydrogen (around 0.03%), while at 100 km altitude, the concentration of hydrogen increases significantly to around 95%. This change in composition is primarily due to the dissociation and ionization of molecules caused by intense solar radiation in the thermosphere.

I hope this explanation clarifies your question. Let me know if you have any further inquiries!