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)
What is the velocity (magnitude and direction) of the passenger with respect to the water? Determine the directional angle relative to due east.
Your boss asks you to calculate the flow through a natural-gas pipeline. Calculate the flow of gas in pounds per minute at the point of injection.
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.
Which unit would you most likely use to measure the difference between the elevation of an airplane in flight and the height of a car on a road?
The magnitude of the velocity of point C is 2 m/s, and the magnitude of the acceleration of point C= 14m/s^2. Determine the acceleration of points B and D.
A golf ball rolls off a horizontal cliff with an initial speed of 14.8 m/s. The ball falls a vertical distance of 12.5 m into a lake below. (a) How much time does the ball spend in the air?
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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