A hot-air balloon has a volume of 2800 m3m3 . The balloon fabric (the envelope) weighs 840 NN . The basket with gear and full propane tanks weighs 1500 NN . Part A If the balloon can barely lift an additional 2800 NN of passengers, breakfast, and champagne when the outside air density is 1.23 kg/m3kg/m3, what is the average density of the heated gases in the envelope

Use henry's law and the solubilities given below to calculate the total volume of nitrogen and oxygen gas that should bubble out of 1.7 l of water upon warming from 25 ˚c to 50 ˚c. assume that the water is initially saturated with nitrogen and oxygen gas at 25 ˚c and a total pressure of 1.0 atm. assume that the gas bubbles out at a temperature of 50 ˚c. the solubility of oxygen gas at 50 ˚c is 27.8 mg/l at an oxygen pressure of 1.00 atm. the solubility of nitrogen gas at 50 ˚c is 14.6 mg/l at a nitrogen pressure of 1.00 atm. assume that the air above the water contains an oxygen partial pressure of 0.21 atm and a nitrogen partial pressure of 0.78 atm.