8. take 3 marbles and place them some distance away with sides touching, tap the outside
marble and send the three crashing into the group of two. your partner should try to catch
the escaping marbles before they hit the floor. try this several experiment times, and
record what happens:

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?