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Find the Moles How many mol of NaC_7H_5O_2 should be added to 150mL of a*0.15MHC_7H_5O_2 solution in order to obtain a buffer with aPH of 4.25 The ka for HC_7HO_2 is 6.3

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$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$

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