Kw = 10^-14 = [H+] * [OH-]
So, [OH-] = 10^-14 / (4.8*10^-4)
[OH-] = 2.1*10^-11 M
(10^-14) / (4.8 × 10^–4) = 2.1 × 10^–11 M OH-
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Kw = 10^-14 = [H+] * [OH-]
So, [OH-] = 10^-14 / (4.8*10^-4)
[OH-] = 2.1*10^-11 M
(10^-14) / (4.8 × 10^–4) = 2.1 × 10^–11 M OH-