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meerabqayyum67 meerabqayyum67
  • 17-01-2016
  • Chemistry
Answered

Air is composed of 79%N^2, 21% O^2. if the air pressure is 101.3 kPa, what are the pressures of N^2 and O^2

Verified Answer :

PhyCS
PhyCS PhyCS
  • 17-01-2016

According to Dalton's law of partial pressures, a mixture of gases inflict pressure in a direct proportion to their volume/mass etc. Therefore, since 79 percent of the air is composed of nitrogen and 21 percent of Oxygen, we multiply 101.3 kPa by 0.79 = 80.027 kPa by Nitrogen, 101.3 kPa by 0.21 = 21.273 kPa by Oxygen.

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