How many grams of water can be produced when 11.7 moles of ethane (c2h6) react with excess oxygen gas? unbalanced equation: c2h6 + o2 → co2 + h2o

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?