Will give brainliest this is due tomorrow idk how to do it i need the last column

If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.

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

How do you lengthen a pattern piece? (family and consumer science, sewing)