Question

Расположите химические формулы веществ в порядке убывания их объемного содержания в воздухе при о.у.:1)О22)N23)Ar4)CO25)O3

Answer 1

2 1 3 4 5 
азота в воздухе 78%
кислорода - 21%
аргона - 0,9%
углекислого газа 0,03%
и озона меньше всего - 10^-6 %

Answer 2

Chemical Formulas and Their Volumetric Content in Air at STP

The volumetric content of substances in air at standard temperature and pressure (STP) in decreasing order is as follows:

1. Nitrogen (N2): Nitrogen makes up approximately 78% of Earth's atmosphere by volume at sea level.

2. Oxygen (O2): Oxygen constitutes about 21% of the Earth's atmosphere by volume at sea level.

3. Argon (Ar): Argon accounts for roughly 0.93% of the Earth's atmosphere by volume at sea level.

4. Carbon Dioxide (CO2): Carbon dioxide makes up about 0.04% of the Earth's atmosphere by volume at sea level.

5. Ozone (O3): Ozone is present in trace amounts in the Earth's atmosphere, with a volume fraction of about 0.000004%.