Which statement describes a chemical change that occurs when a candle burns?

A. The wax burns, forming carbon dioxide.

B. The wax dissolves, forming a puddle.

C. The liquid wax evaporates into the air.

D. The solid wax melts to form liquid wax.

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?