posted by malik .
A cyclopropane-oxygen mixture is used as an anesthetic. If the partial pressure of cyclopropane in the mixture is 334 mm Hg and the partial pressure of the oxygen is 1.02 atm, what is the total pressure of the mixture in torr?
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Dalton's Law: in a mixture of gases, the total pressure is equal to the sum of partial pressures. Commit that to memory, now. There is a corollary to this law, about the mole ratios, you need to commit that one also. I would be shocked if it is not in your text (Raoult's law)
note the pressures above are in all different units, I suggest changing them all to torr