Calculate the pOH of an aqueous solution at 298 K when the hydroxide ion concentration is 3.7 x 10−5 M.

Which statement is true about the part of the electromagnetic spectrum that human eyes can detect? it contains only the colors of the rainbow and television waves. o it is divided into seven ranges of wavelengths. it contains ultraviolet, visible, and infrared light. it is divided into nine ranges of wavelengths.

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

Compare and contrast physical changes with chemical changes.