A patient's oxygen tank holds 21.9 L of oxygen (O2) at a pressure of 24.3 atm. What is the final volume, in liters, of this gas when it is released at a pressure of 2.50 atm with no change in temperature and amount of gas?

Liquid from a brewery fermentation contains 10% ethanol and 90% water. part of the fermentation product (50,000 kg/h) is pumped to a distillation column on the factory site. under current operating conditions, a distillate of 45% ethanol and 55% water is produced from the top of the column at a rate of one-tenth that of the feed. what is the composition of the waste "bottoms" from the still?