[" 39."A beer has a pH of "4.30." What i...

[" 39."A beer has a pH of "4.30." What is the "[H_(3)O^(+)]?],[[" (a) "3.0times10^(-4)," (b) "2.0times10^(-4)],[" (c) "2.0times10^(-5)," (d) "5.0times10^(-5)]]

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