Question

Which statement best defines Dalton's law of partial pressures?
A. At constant pressure, the volume of a gas increases or decreases by the same factor that its temperature increases or decreases.
B. It defines a gas in which collisions between atoms or molecules are perfectly elastic and there are no intermolecular attractive forces.
C. The law states that the product of the volume of a gas and its pressure over the temperature is equal to a constant.
D. The total pressure exerted by a gas mixture is equal to the sum of the partial pressures of each individual gas in the mixture.