25) one canned juice drink is 15% orange juice; another is 5% orange juice. how many liters of each should be mixed together in order to get 10l that is 12% orange juice.

Butane gas reacts with oxygen gas to give carbon dioxide gas and water vapor (gas). if you mix butane and oxygen in the correct stoichiometric ratio, and if the total pressure of the mixture is 390 mmhg, what is the pressure (in mmhg) of water vapor after the reaction is completed (temperature and volume do not change).