Aqueous silver nitrate reacts with solid aluminum to produce aqueous aluminum nitrate and solid silver. If 0.95 moles of solid silver are produced, how many moles of aluminum were reacted?

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?