Which statement about dalton's law of partial pressure is true?
the total pressure exerted by a mixture of gases is equal to the lowest pressure exerted by a gas in the mixture.
the total pressure exerted by a mixture of gases is equal to the sum of the partial pressures of the gases in the mixture.
the total pressure exerted by a mixture of gases is equal to the highest pressure exerted by a gas in the mixture.
the total pressure exerted by a mixture of gases is equal to the product of the partial pressures of the gases in the mixture.