In which of the following is the oxidation state of oxygen not equal to -2?
Group of answer choices

CO

H2O2

Na2O

MgO

What term describes technology that operates on an atomic level

Why is retrograde motion an apparent motion

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?