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A solution contains 0.010 M each Cu(NO3)2 and Bi(NO3)3. An equal portion of 12 M NH3 is added to the solution.
What is the initial concentration of OH- (in M) once the two solutions have been mixed together, but prior to any reactions occurring? The Kb for NH3 = 1.8 x 10-5.
Once all reactions have completed, what is the equilibrium concentration (in M) of Cu2+? Assume that the concentrations of NH3 and OH- are buffered and cannot change from their initial values. The Kf for Cu(NH3)4 2+ = 1.1 x 1013.
Once all reactions have completed, what is the equilibrium concentration (in M) of Cu(NH3)4 2+ ? Assume that the concentrations of NH3 and OH- are buffered and cannot change from their initial values.
Once all reactions have completed, what is the equilibrium concentration (in M) of Bi3+? Assume that the concentrations of NH3 and OH- are buffered and cannot change from their initial values. The Ksp for Bi(OH)3 = 3.2 x 10-40.
Calculate the probability that a quantum mechanical particle in a one-dimensional box will be found in the left quarter of the box through repeated measurements when it is in the lowest-energy state?
if a liquid has a density or 1.17 g/cm(3) and a mass of 3750 g calculate the volume?
Calculate the molarity of S2O32- if 3.0 mL 0.10 M K2S2O8, 2.0 mL 0.10 M K2SO4, 1.0 mL 2% starch, 2.0 mL 0.010 M Na2S2O3, and 5.0 mL 0.20 M KI are mixed.
Most community water supplies contain 0.5 ppm chlorine added for purification. What mass of chlorine must be added to 1500. L of water to reach this level. (Hint: the density of water is 1.00 g/mL)
What are the steps to recrystallize an impure solid? Answer 1. Heating the water. 2. Dissolving the solute.3. Letting the solute cool.4. Collecting and washing the crystals.
The concentration of Mg2+ in seawater is 0.052 M. At what pH will 77% of the Mg2 be precipitated as the hydroxide salt? [Ksp for Mg(OH)2 = 8.9 10-12.]
I need help describing an experiment where one could measure the value of the extinction coefficient of a solution with a concentration (c mol/L) of chlorophyll in water for a given wavelength.
If the outermost electron in a potassium atom were excited to a 4d-orbital and then fell to the same orbitals, describe qualitatively how the emission spectrum would differ from that of hydrogen (do not do any calculations). Explain your answer.
Understanding the basics of thermal chemistry and The Second Law of Thermodynamics indicates that a system
2500 kg/hr of a mixture containing equal parts by mass of benzene and toluene are distilled. The flow rate of the overhead product stream is 988 kg/hr , and the bottom stream contains 17.03 wt% benzene.
what happend of the particles of the substance in the cup (i) when it is a liquid; (ii) as it begins to evaporate; (iii) when the last bit of liquid has just evaporated.
Nitrogen dioxide decomposes according to the reaction 2NO2(g) 2NO(g) + O2(g) where Kp = 4.48 × 10-13 at 25°C. What is the value for Kc?
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