Question

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1) what are the uses of various gases in air??
2) what is atmospheric pressure?? ( explain with the activity)​

Answer 1

Answer:

Oxygen (O2): medical use, welding.

Nitrogen (N2): fire suppression, provides an inert atmosphere.

Helium (He): balloons, medical equipment.

Argon (Ar): welding, provides an inert atmosphere for materials.

Carbon dioxide (CO2): carbonated soft drinks.

Acetylene (C2H2): welding

Explanation:

Atmospheric pressure is defined as the force per unit area exerted against a surface by the weight of the air above that surface. In the diagram below, the pressure at point "X" increases as the weight of the air above it increases. e3radg8

Hpoe it is helpful