True or False?

Weak bases dissociate
completely into (OH)- and
metal cations.

What material does not melt at any temperature

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?

Balance the following reaction. as2s3 + 9o2 → 2as2o3 + so2