1. explain what it means when we say a substance is magnetic. (hint: be sure to mention the role of the electrons) 2. discuss the relationship between electric and magnetic fields (hint: be sure to discuss what happens when electric current is applied to a magnetic field.)

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?