What is a force caused by air that

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

Which metals are called noble metals

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?