- Trig help: continued.?

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Which one has greater vapor pressure water or acetone? Son leccion 2 test? Help for math Calculus 2.. Please Correct one part the wrong answer. The answer ( ∫ du/u ) wrong? A protein contains a 22-residue long alpha helix. b) what is the length of this helix (in A) in the direction of the helix axis? Why is formal charge effect on acidity the strongest?
Could you explain why H2SO4 is more acidity than HNO3 by using formal charge?