need chemistry help with the hydronium-ion concentration

Chemistry
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What is the hydronium-ion concentration of a 0.30 M solution of HCN (K= 4.9´10–10) at 25°C?

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Dec 4th, 2015

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 c. 2.2 ´ 10–6M

this is the hydronium-ion concentration of a 0.30M solution of HCN (K= 4.9´10–10) at 25°C

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Dec 4th, 2015

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