According to Dalton's Law, how do you calculate total pressure?

Dalton's Law states that in a mixture of gases, the total pressure exerted by the mixture is equal to the sum of the partial pressures of each individual gas present. Each gas in the mixture exerts its own pressure independently, which contributes to the total pressure. This principle is crucial in understanding how gases interact and behave under varying conditions and compositions.

When calculating total pressure, it is essential to add together the pressures of all individual gases, ensuring that each gas's contribution is accurately represented. This law is applicable in various scenarios, such as in respiratory physiology, industrial gas mixtures, and meteorology.

The other options, while related to different mathematical operations concerning pressure, do not reflect the principle established by Dalton's Law. The average of individual pressures would not yield the total pressure; it simply provides an indication of central tendency. The difference between the highest and lowest pressures does not provide relevant information about the total pressure. Lastly, multiplying individual pressures does not adhere to the observations made by Dalton's Law regarding the additive nature of partial pressures in a gas mixture.