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Question - Pyridine (C5H5N) is a weak base with Kb = 1.7 x 10-9. What is the concentration of pyridine in a solution of pyridine whose pH = 9.15?
Please give an idea about how you obtained the answer
what is the total number of joules absorbed by 65.0g of water when the temperature of the water is rasied from 25.0 c to 40,0 c?
What is the concentration of the sodium ion (in M) in a solution of 0.695 M sodium phosphate
How many moles contain each of the following?
How many unit cells are in exactly 1 cm3?
Calculate the concentration of HC2H3O2 or NH3 in each of the solutions you measured. By how many units did the pH of a solution of a weak base or acid
what amount of solid naoh must be added to 1.0l of a .10 m h2co3solution to produce a soln with h 3.2 x10-11m? there
Explain how many moles of nitrogen n2 are in 0.650 mol of ammonium carbonate (NH4) CO 3. Explain how many grams of this compound supply this much nitrogen
Calculate the pH of a solution prepared by mixing 20.5mL of a 0.500M sodium fluoride solution with 32.5mL of a 0.750M hydrofluoric acid solution.
For each of the following unbalanced equations, indicate how many moles of the second reactant would be required to react exactly with 0.275 mol of the first reactant. Show all work below.
Assume that 120 grams of CH 3CH 2OH at 29 degree Celsius temperature is added with 250 grams of CH 3CH 2OH at 85 degree Celsius degree Celsius at constant pressure of atmosphere.
A mixture initially contains A ,B ,C and in the following concentrations:[A] = 0.700 ,[B] = 1.35 , and [C] = 0.700 . The following reaction occurs and equilibrium is established:
4.41-g sample of a salt dissolves in 9.10 g of water to give a saturated solution at 25°C. What is the solubility (in g salt/100 g of H2O) of the salt.
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