The chemical equation N2 + 3H2 → 2NH3, If 3.2 moles of N2 and 5.4 moles of H2 are used, how many moles of the excess reactant are left over? I will report you if you answer with a link!

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?