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Calculate the pH of the 0.20 M NH/0.26 M NHCl buffer. What is the pH after the addition of 20.0 mL of 0.050 M NaOH to 90.0 mL of the buffer solution? The Kb of ammonia is 1.8 x 10-5.
What is the approximate value of the equilibrium constant, Kn, for the neutralization of hydrochloric acid with sodium hydroxide, shown in the equation below
Propose a synthesis of trans-4-octene starting from 1-pentyne. Specify the reagents you would use to carry it out. If two or more routes to the same product are possible, show only one of them.
Which protein elutes first from a diethylaminoethyl cellulose ion exchange column with a decreasing pH gradient
A student added more KSCN solution that instructed when making standard solution. assuming no other errors were made in the experiment
Draw the line and wedge structures of the products obtained on addition of iodine azide to both cis and trans-2-butenes. Assign ‘R' or ‘S' to the asymmetric centers in your product.
Write a net ionic equation, including states for teh reaction of Cobalt (II) Chloride and Silver Nitrate 2. Circle the species in which nitrogen has the highest oxidation number
What volume of 0.862 M KOH solution is required to make 3.75 L of a solution with pH of 12.8
Rubidium atoms are bombarded with 131 nm light. What is the kinetic energy of the ejected electrons
An object has a mass of 6.85g. when placed in a graduated cylinder containing 25.0 ml of water, the water level increased to 28.8 ml. Calculate the density of the object
What is its energy in joules? Enter your answer in the form 1.02E12 for 1.02 x 1012 with three significant figures
calculate the mass of CuS produced and the concentration of H+ ion produced by bubbling H2S into 1.00 L of 0.10 M CuCl2 (aq) solution. the net ionic equation
What is the mass, in grams, of 55.0 mL of the liquid propylene glycol, a moisturizing agent for foods, which has a density of 1.036 g/mL at 25 degress Celcius.
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