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In a sample of blood at 25° C, [H+] = 4.6 x 10-8 M. Find the...

  1. In a sample of blood at 25° C, [H+] = 4.6 x 10-8 M. Find the molar concentration of OH-, and decide if the sample is acidic, basic, or neutral.

I am mainly confused about how to get the molar concentration Thank you!

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