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Partial pressure of O2 in the atmosphere is 21.23 kPa

Question: The partial pressure of oxygen in the atmosphere is 21.23 kPa. Calculate the partial pressure in atm. Be sure your answer has the right number of significant digits.

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In a mixture of gases, the partial pressure is the amount of pressure each gas would exert if it were the only gas in the volume. The particles of a gas are so small that they do not interact. 

Dalton’s law states that the total pressure of a system is the sum of the partial pressures of the gases in the mixture. The ratio of the partial pressures of two components will be equal to the ratio of moles of the two components.

One helpful value for converting between pressures is the mole fraction, or ratio of moles, of one gas to the total number of moles. The mole fraction multiplied by the total pressure gives the partial pressure of the gas.

Related Topic Questions:

a) Calculate the partial pressure of oxygen and hydrogen in a mixture of 35.0 g of oxygen gas and 11.5 g of hydrogen gas in a 2.0 L container at 35F?

b) Within a balloon, there are 3 types of gasses. The first gas is 6 moles in amount, the 2nd is 4 moles and the 3rd is 3.5. If a total pressure of 10 atm was felt by the balloon and labeled the 1st, 2nd, 3rd gas X, Y, Z, what is the partial pressure of each gas?

c) The partial pressure of O2(g) in a mixture of O2,(g) and N2(g) is 1.02 atm. The total pressure of the mixture is 2.43 atm. Determine the partial pressure of N2,(g) and the mole fraction of each gas in the mixture.

d) Calculating partial pressure in a gas mixture A 6.00 L. tank at 18.4 °C is filled with 8.55 g of sulfur tetrafluoride gas and 2.83 g of carbon dioxide gas. You can assume both gases behave as ideal gases under these conditions. Calculate the mole fraction and partial pressure of each gas, and the total pressure in the tank. Be sure your answers have the correct number of significant digits. mole fraction: x 10 sulfur tetrafluoride partial pressure: atm mole fraction carbon dioxide partial pressure atm Total pressure in tank: atm

e) What is the partial pressure of oxygen in a gas mixture that contains 4.10 moles of oxygen, 2.38 moles of nitrogen, and 0.917 mole of carbon dioxide and that has a total pressure of 2.89 atm?