Engineering Thermodynamics
According to Dalton's law, the total pressure of the mixture of gases is equal to

Average of the partial pressures of all
Sum of the partial pressures of all divided by average molecular weight
Greater of the partial pressures of all
Sum of the partial pressures of all

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Engineering Thermodynamics
Extensive property of a system is one whose value

Depends on the mass of the system like volume
Is dependent on the path followed and not on the state
Does not depend on the mass of the system, like temperature, pressure, etc.
Is not dependent on the path followed but on the state

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