An adult inhales approximately 12 times per minute, taking in about 500 ml of air with each inhalation. oxygen and carbon dioxide are exchanged in the lungs, but there is essentially no exchange of nitrogen. the exhaled air has a mole fraction of nitrogen of 0.75 and is saturated with water vapor at body temperature, 37°c. if ambient conditions are 25°c, 1 atm, and 50% relative humidity, what volume of liquid water (ml) would have to be consumed over a two-hour period to replace the water loss from breathing? how much would have to be consumed if the person is on an airplane where the temperature, pressure, and relative humidity are respectively 25°c, 1 atm, and 10%?

Achemist wants to extract copper metal from copper chloride solution. the chemist places 0.50 grams of aluminum foil in a solution containing 0.75 grams of copper (ii) chloride. a single replacement reaction takes place. (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction? a) approximately 0.36 grams, because copper (ii) chloride acts as a limiting reactant b) approximately 1.8 grams, because copper (ii) chloride acts as a limiting reactant c) approximately 0.36 grams, because aluminum acts as a limiting reactant d) approximately 1.8 grams, because aluminum acts as a limiting reactant