A mixture of nitrogen and hydrogen react in a closed container to produce ammonia. The reaction is interrupted and the container has 3.0 moles of each reactant and product. How many moles of nitrogen and hydrogen were present at the beginning of the reaction

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?