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What is the partial pressure formula?

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Quick Answer

The partial pressure formula is the product of the number of moles of a component of a substance divided by the total number of moles of the substance, multiplied by the barometric pressure. The partial pressure can be expressed using the atmosphere unit, abbreviated as atm.

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Full Answer

The partial pressure formula derives from Dalton's law of partial pressures. The law states that the sum of the pressures of each component in a substance equals the pressure of the entire substance. Mathematically, this law is expressed as P(total) = P1 + P2 + P3 + ... . The ratio between the moles of a component and the total number of moles is called the mole fraction.

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