Final answer:
To find the total pressure of a gas mixture, add the partial pressures of all the component gases, according to Dalton's law of partial pressures.
Step-by-step explanation:
In order to calculate the total pressure of a gas mixture, you would add up all of the partial pressures of the individual gases. This principle is known as Dalton's law of partial pressures.
Dalton's law states that each gas in a mixture exerts pressure independently of other gases present, and the total pressure exerted by the mixture is simply the sum of these individual pressures. If you have components A, B, and C, the total pressure (PTotal) can be expressed as PTotal = PA + PB + PC, where PA, PB, PC are the partial pressures of gases A, B, and C respectively.
The mole fraction, which is the ratio of the moles of a component to the total moles in the mixture, can also be used to determine the partial pressure of a gas in a mixture by multiplying the mole fraction of that gas with the total pressure.