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Calculate [H^(o+)] in a soluton that is ...

Calculate `[H^(o+)]` in a soluton that is `0.1M HCOOH` and `0.1 M HOCN. K_(a)(HCOOH) = 1.8 xx 10^(-4), K_(a) (HoCN) = 3.3 xx 10^(-4)`.

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` 7.1 xx 10^(-3)` M
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