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Calculate the pH of 23.5 mL of a .165 M aqueous NH3 solution after the addition of 21.7 mL of .100 M HCL. The kb for NH3 is 1.8x10(-5)
How many grams of oxygen reacted with the phosphorus?
What is the molarity of a solution of 14.0 g NH4Br in enough H2O to make 150 mL of solution?
Why does tellurium have an endothermic electron affinity. In other words, why would it take energy to add an electron to it
What is the molarity of a solution if 4.50 g NaF is dissolved in enough water to make 250.0 mL of solution?
Which of the following reactions is (are) oxidation-reduction reactions? Explain your answer briefly.
The pH of a 0.175 M aqueous solution of a weak acid is 3.52. What is Ka for this acid
The initial temperature of the calorimeter is 23.0}C. If 7.20g of CaCl2 is added to the calorimeter, what will be the final temperature of the solution in the calorimeter? The heat of solution\Delta H_soln of CaCl2 is -82.8 kJ/mol.
Calculate the volume and mass required to make 0.1m solutions of your assigned acid (HNO3) and conjugate base
calculate the concentration of the hydronium ion in a solution prepared by mixing equal volumes of .050 molar HOCL and .020 molar NaOCl
What is the pH of a buffer prepared by adding 0.506 mol of the weak acid HA to 0.507 mol of NaA in 2.00L of solution? The dissociation constant Ka of Ha is 5.66 x 10^-7.
For a Voltaic Cell involving Pb as the anode and Ag as the cathode, what would be the initial voltage of the cell if the initial concentration of Pb2+ was 0.5M and Ag+ was 0.1M
The following set of data was obtained by the method of initial rates for the reaction: S2O8^-2 + 3I^- --> 2SO4^-2 + I3^- Exp [S2O8^-2] [I-] Initial Rate (M s^-1) 1 0.25 0.10 9.00 x 10^-3 2 0.10 0.10 3.60 x 10^-3 3 0.20 0.30 2.16 x 10^-2 What is t..
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