Question

A):List three main gases in the air ? B) :how much of each gas is there in 100 cm3 of Air ? C) :which of these gases are elements and which are compounds?​

Answer 1

Answer:

A. Nitrogen, oxygen and carbon dioxide

B. Each 100 cm3 of air, constitutes 78cm3 nitrogen, 21cm3 oxygen and 1cm3 constitutes of other gases like Argon, ozone, carbon dioxide and water vapour in small amounts.

C. Nitrogen and oxygen - an element.

CO²- compound.