What is the ph at the equivalence point
What is the pH at the equivalence point when when 25.0 mL of 0.189mol/L HN3(aq) is titrated with 0.123 mol/L NaOH(aq)?Assume the temperature is 25oC. (For HN3,pKa=4.72 at 25oC).
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Suppose the distribution of Y, conditional on X = x, is N(x, x2), and marginal of X is U[0,1]. (a) Find Cov(X, Y)
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A. Determine the sample size required to estimate a population proportion to within 0.032 with 97.8% confidence, assuming that you have no knowledge of the approximate value of the sample proportion.
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Suppose you have an aqueous solution contains 158.2 g KOH per liter, its density is 1.13g/cm3. You want to prepare a 0.250 molal solution of KOH, starting with 100.0ml of the orginal solution.
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