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Presume that the trial wave function = (1-ar)-2 is chosen to explain the hydrogen atom, where A is a variable parameter. Assume that what is normalized. Explain the resulting energy expression for the hydrogen atom is E= a 2/5-a/2 in atomic units.
Determine the best value for the parameter a, for the energy and compare this to the exact value, E = -0.5 atomic units.
What was the concentration of the unknown HClO4 solution? The neutralization reaction is: HClO4(aq)+NaOH(aq)==>H2O(l)+NaClO4(aq)
Transform the dependent variable (absorbance) to their natural logarithms, and plot them against the independent variable (time). Identify a time t' that defines the begining of the linear portion of the decay curve.
What volume of 1 M HCl do you have to add to change the pH of the solution to 6? Assume that the change in volume from adding HCl is negligible. Recall that pH = pKa + log([A-]/[HA]. I cannot, for the life of me, figure this out.
What is the pressure in atmospheres inside a container of gas connected to a mercury-filled open-end manometer when the level in the arm connected to the container is 28.0cm higher than the level in the arm open to the atmosphere and the atmospher..
when 92.0 grams of nonionic compound were dissolved in 985 grams of water the freezing point of the solution was found
An aqueous solution contains the amino acid glycine. Assuming that the acid does not ionize in water, calculate the molality of the solution if it freezes at -1.1 degree centigrade.
A certain number of sodium ion lattice points and a certain number of chloride ion lattice points are required. How many chloride ion lattice points are in the unit cell as described above?
the reaction rate does not change when [B] increases from 1 M to 2 M. Which of the following is the correct rate law for the reaction?
Calculate the pH of a 0.047 M solution of carbonic acid H2CO3. The Ka1 of carbonic acid = 2.6 x 10-7 and the Ka2 of carbonic acid = 5.6 x 10-11 what is the easiest way someone can explain this
Oxalic acid is a diprotic acid (H2A) which can be used as a primary standard. If it takes 33.6 mL of a solution of NaOH to neutralize 2.118 g of a oxalic acid, what is the molarity of the sodium hydroxide. MM(Oxalic acid) = 126.07g
If 26.55 mL of a standard 0.1650 M NaOH solution is required to neutralize 31.69 mL of H2SO4, what is the molarity of the acid solution
when a 0.6333-g sample of a compound of carbon hydrogen and sulfur was burned in excess oxygen 0.9272 g co2 0.3795 g
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