Question

Arrange H2,O2,N2,CO2 in descending order from the heaviest to the lightest gases.​

Answer 1

Answer:By volume dry air contains 78.09% Nitrogen, 20.95% Oxygen, 0.93% Argon, 0.03% Carbon dioxide and small traces of other gases. There is a small amount of hydrogen gas in the Earth's atmosphere; it makes up less than one part per million.

Ascending order of gases as per their composition in air is-

Hydrogen < Oxygen < Nitrogen

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Answer 2

Answer:

Descending order from the heaviest to the lightest gases.​

$N_2 > O_2 > CO_2 > H_2$

Explanation:

• Dry air includes 78.09 percent nitrogen, 20.95 percent oxygen, 0.93 percent argon, 0.03 percent carbon dioxide, and minor amounts of other gases by volume. The Earth's atmosphere contains a minuscule amount of hydrogen gas, less than one part per million.
• Descending order of gases as per their composition in the air is-
• Nitrogen > Oxygen > carbon-dioxide > Hydrogen