Question: The number of moles of oxygen in 1 L of air containing 21% oxygen by volume, in standard conditions, is [CBSE PMT 1995; Pb. PMT 2004]
(a) 0.186 mol
(b) 0.21 mol
(c) 2.10 mol
(d) 0.0093 mol
Correct Answer: (d) 0.0093 mol
![The number of moles of oxygen in 1 L of air containing 21% oxygen by volume, in standard conditions, is [CBSE PMT 1995; Pb. PMT 2004] (a) 0.186 mol (b) 0.21 mol (c) 2.10 mol (d) 0.0093 mol](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgrmp204B7r1KPBtbGmyDCToHSIIJXqhQcqmp7XGc48kUtgjBMQyzShHMIOURULVJrrqJHzSo_P6ZgDQLCZoBOPkpy7zFsksSEhsI3O4sT-DanW8r-0teVMFT7PrOF5XG0B5tNIXaEqUXrWbnTnMLMOHsf42myllIqcJpmc5dYTLLdhtAassh5p14kk/s1920/The%20number%20of%20moles%20of%20oxygen%20in%201%20L%20of%20air%20containing%2021%25%20oxygen%20by%20volume,%20in%20standard%20conditions,%20is%20%5BCBSE%20PMT%201995;%20Pb.%20PMT%202004%5D.jpg "The number of moles of oxygen in 1 L of air containing 21% oxygen by volume, in standard conditions, is [CBSE PMT 1995; Pb. PMT 2004] (a) 0.186 mol (b) 0.21 mol (c) 2.10 mol (d) 0.0093 mol")
The number of moles of oxygen in 1 L of air containing 21% oxygen by volume, in standard conditions, is [CBSE PMT 1995; Pb. PMT 2004]