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Consider the following solutions for the next four questions I. 100.0 mL of .50 M (C2H5)3N (Kb = 4.0x10-4) II. 50.0 mL of .30 M HClO4 III. 50.0 mL of .25 M KOH IV. 100.0 mL of .50 M (C2H5)3NHI 1. Calculate the pH of solution I 2. Calculate the pH of the resulting solution when the solutions I and II are mixed together. 3. Calculate the pH of the resulting solution when solutions I, III, and IV are mixed together. 4. Calculate the pH of the resulting solution when solutions I, I, III, and IV are mixed together
Which element requires the least amount of energy to remove the most loosely held electron from a gaseous atom in the ground state?
a small bubble rises from the bottom of a lake where the temperature andnbsppressure are 4degc and 3.0 atm to the
Determine the molar amounts of NO, O2 and NO2 after a complete reaction. NO=? O2=? NO2=?
Show that you can selectively precipitate ONLY AgBr at a concentration of Ag of 5.5x10^-10 M in a solution that contains both Br- and CI- at a concentration of 0.02M.
The concentration of cholesterol, glucose and urea in the blood as of a fasting individual are listed below in units of mg/100mL. Change these concentrations into units of mM.
Using the solution CoCl2 and distilled water, how would you prepare 100 mL of a 0.0600 M solution of CoCL2. what absorbance would you expect from the solution from part a, at the wavelength of maximum sensitivity
Problem- Phosgene, COCl2, Gained notoriety as a chemical weapon in world war I. Phosgene is by the reaction of carbon monoxide and chlorine
Mg3N2(s) + H2O(l) → Mg(OH)2(s) + NH3(g) If this process is 82% efficient, what mass of ammonia can be prepared from 22.0 kg magnesium nitride.
Problem- What mass of sodium benzoate must be added to 3 L of 1.1 M C6H5COOH (aq) to makea buffer with pH=3? Answer in units of g.
What is the mRNA sequence for the following segment of DNA: GACTATCCCATAGAG Based upon the mRNA sequence, what is the peptide sequence
Sort the subsequent reactants into one of these three categories- arrhenius/bronsted- lowry acid, arrhenius base, bronsted- lowry base, based upon their actions in the reactions shown
Given a gas mixture consisting of 5lbm of methane, 10 lbm of ethane, 5 lbm of propane, and 3 lbm of butane, determine the number of moles of each component in the mixture
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