avsa.orgavsa.org/sites/default/files/files/PH1.pdf · 2016. 11. 29. · and suckers. of pH 5 is one...
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avsa.orgavsa.org/sites/default/files/files/PH1.pdf · 2016. 11. 29. · and suckers. of pH 5 is one hundred times as acid as one of pH 7.0 and a pH of 4.0 one thousand times as acid