Air is about 78.0% nitrogen molecules and 21.0% oxygen molecules. Several other gases make up the remaining 1% of air molecules. Part A What is the partial pressure of nitrogen in air at atmospheric pressure (101 kPa)? Assume ideal behaviour. Express your answer to three significant figures and include the appropriate units.

Introductory Chemistry: A Foundation
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Chapter15: Solutions
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The ideal gas law, PV = nRT is independent of
the kind of gas. In other words, the pressure exerted
by a given number of ideal gas particles is the same
whether the sample consists of all one type of
particle or a mixture of different kinds of particles.
Air is about 78.0% nitrogen molecules and 21.0% oxygen molecules. Several other gases make up the remaining 1% of air
molecules.
Therefore, the pressure exerted by a mixture of
gases can be expressed as follows:
Part A
Tota RT
Ptotal =
V
What is the partial pressure of nitrogen in air at atmospheric pressure (101 kPa)? Assume ideal behaviour.
A partial pressure is the pressure exerted by just one
type of gas in a mixture. A partial pressure is
calculated using only the number of moles of that
particular gas, instead of the total number of moles:
Express your answer to three significant figures and include the appropriate units.
• View Available Hint(s)
RT
P =
V
P = nRT
P= nRT
etc.
The sum of the partial pressures is equal to the total
pressure in the mixture:
Value
Units
Ptotal = P1 + P2 +P3 + · .
Submit
Transcribed Image Text:The ideal gas law, PV = nRT is independent of the kind of gas. In other words, the pressure exerted by a given number of ideal gas particles is the same whether the sample consists of all one type of particle or a mixture of different kinds of particles. Air is about 78.0% nitrogen molecules and 21.0% oxygen molecules. Several other gases make up the remaining 1% of air molecules. Therefore, the pressure exerted by a mixture of gases can be expressed as follows: Part A Tota RT Ptotal = V What is the partial pressure of nitrogen in air at atmospheric pressure (101 kPa)? Assume ideal behaviour. A partial pressure is the pressure exerted by just one type of gas in a mixture. A partial pressure is calculated using only the number of moles of that particular gas, instead of the total number of moles: Express your answer to three significant figures and include the appropriate units. • View Available Hint(s) RT P = V P = nRT P= nRT etc. The sum of the partial pressures is equal to the total pressure in the mixture: Value Units Ptotal = P1 + P2 +P3 + · . Submit
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