Question

Carbon dioxide constitutes about 0.03% of the atmosphere
(a) By volume
(b) By weight
(c) by mass
(d) None of these

Answer 1

Hint This is the quantity of a three-dimensional space that is enclosed by a closed surface. Its SI unit is the cubic meter. This is also known as the space occupied by a substance that may be solid, liquid, gas, or plasma.

Complete answer:
Carbon dioxide About 0.03% of the atmosphere is constituted by Carbon dioxide by volume. This is a colorless and odorless gas having a density of about 53% higher than that of dry air. Chemically it is represented as carbon dioxide. Naturally, carbon dioxide occurs in Earth's atmosphere as a trace gas. The current concentration of carbon dioxide gas in our atmosphere is about 0.04% (412 ppm) by volume, it has increased from pre-industrial levels of 280 ppm.

Additional Information:
-In our atmosphere, the air is composed of different gases in different percentages by volume. The air contains ${ 78 }$% of nitrogen gas, about ${ 21 }$% of oxygen gas, almost ${ 1 }$% of argon gas, and ${ 0.03 }$% of carbon dioxide.
-Other molecules or particles of different substances are also present in the atmosphere but traces or very small quantities.
-In nature carbon dioxide occurs in groundwater, rivers and lakes, ice caps, glaciers, and seawater because it is soluble in water. But it is also found in the deposits of petroleum and natural gas.
-When all aerobic organisms metabolize organic compounds to produce energy by respiration, carbon dioxide gas is produced.
-The most significant long-lived greenhouse gas in Earth's atmosphere is carbon dioxide gas.
-The rapid increase of concentration of carbon dioxide gas in the atmosphere, leads to global warming.
-In industries, carbon dioxide gas is used for different purposes, such as in welding and fire extinguishers carbon dioxide is used as an inert gas, in air guns and oil recovery carbon dioxide is used as a pressurizing gas, in decaffeination of coffee and supercritical drying co2 is used as a chemical feedstock and as a supercritical fluid solvent.
-The dried carbon dioxide is known as dry ice and is used as a refrigerant (as a mobile refrigerant).

So the correct answer is,’ By volume’.

Note:
-In our atmosphere, the air is composed of different gases in different percentages by volume.
-The rapid increase of concentration of carbon dioxide gas in the atmosphere, leads to global warming.
-Inert gas is a gas that is very less reactive than any other substances.
-Ocean acidification is also caused by co2 because it dissolves in water to form carbonic acid.