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1. The 1s--> 2p transition in a hydrogen-like atom occurs at 1.00x106 cm-1.
a. What is the ionization energy of this atom in Joules?
b. If this atom is ionized with light with a wavelength 4.00 nm, what is the de Broglie wavelength of the ejected electrons?
2. The 2p-->1s transition in 4He+ is at 329,211 cm-1. Predict the position in cm-1 of the same transition for 3He+. (4He=2 protons+2 neutrons. 3He = 2 protons + 1 neutron)
There is a titration of 25.00 mL. The equevalence point is reached after 18.50 mL of 0.171 M HCl has been added . What is the initial concentration of ammonia in the solution? what is the pH of the solution at the equivalence point
How much energy in kilojoules is required to convert 260 mL of water at its boiling point from liquid to vapor?
Gold has a density of 19.3 g/cm3. How many pounds does a gold sphere weigh if it has a diameter of 5.20 inches?
Can someone please send me a link to the solution manual for Elementary Principles Of Chemical Processes, edition 2.
You are titrating 50.0ml of a 2.64M benzoic acid solution with a 0.445M potassium hydroxide solution.
How many mmols of Tris would you need to prepare 100 mL of a 100 mM Tris solution
Calculate the change in molar entropy when 2.00 miles of ozone are compressed isothermally to one quarter of its original volume. Treat ozone as an ideal gas.
Given equilibrium pressure, calculate Kp, When heated, ammonium carbonate decomposes as follows. NH4CO2NH2(s) f/r2NH3(g)+CO2(g)
Solid soduim reacts violently with water producing heat hydrogen and sodium hydroxide. How many moeclues of hydrogen gas are formed when 48.7 g of sodium are added to water.
A solution is 2.25% by weight NaHCO3. How many grams of NaHCO3 are in 250.0 g of solution
What is the molality of ethanol in a solution prepared by dissolving 5.00 mL of ethanol (C2H5OH, of density 0.800 grams/mL) in 25.0 mL of water (H2O, of density 1.000 grams/mL)?
commercial concentrated of nh3aq is 28 percent ammonia by mass. density of the solution 0.900 gml. compute the
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