The gas that is less dense than air is
...The gas that is less dense than air is
nitrogen
chlorine
Carbon(IV) oxide
Oxygen
Correct answer is A
The density of a gas is directly proportional to its molar mass. This means that gases with a lower molar mass will be less dense than gases with a higher molar mass. Nitrogen (N2) has a molar mass of 28 g/mol, which is less than that of air (approximately 29 g/mol), making it less dense than air.
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