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The He I (21.22 eV) photoelectron spectrum of a molecule shows three sharp peaks corresponding to photoelectron kinetic energies of 1.64 eV, 5.81 eV and 9.71 eV. What is the lowest ionization energy of the molecule?
a system consisting of 57.5 g of liquid water at 298k is heated using an immersion heater at a constant pressure of1.00
0.1278- sample that is 97.50% As2O3 by mass had been used in the titration, how many milliliters of the 0.02140M KMnO4(aq) would have been required?
An ordinary vapor compression refrigeration cycle using R134a is to operate with a condenser at 45 C and an evaporator at -10 C. The compressor is 80% efficient.
What volume to the nearest 0.1 mL of 4.50-M NaOH must be added to 0.400 L of 0.150-M HNO2 to prepare a pH = 3.20 buffer
Assuming that a neutron star has the same density as a neutron, calculate the mass (in kg) of a small piece of a neutron star the size of a spherical pebble with a radius of 0.20 mm.
How many moles of SCN-1 are there in 10.0 mL of a 0.000100 M soulution? How many grams. Show me step by step how to do these problems.
Predict the electron configuration of an octahedral d4 complex with (a) strong field ligands and (b) weak field ligands, and state the number of unpaired electrons in each case.
Calculate the pH and pOH of a solution that has an H2O+ concentration of 1.3 x 10 -6M.
Derive a curve for the titration of 50.00mL of a 0.1000 M solution of Compound A with a 0.2000 M solution of compound B in the following list. For each titration, calculate the pH afterthe addition
To what pH should a solution that is 0.075 M each in Ca2+ and Cd2+ ions be adjusted in order to best separate ions by precipitation of one of the hydroxides. What are the concentrations of the metal ions after the pH is adjusted to this value
Consider the gas phase reaction: 2SO2(g) + O2 (g) 2 SO3 (g). delta H°=-198 kJ/mol. a) How would you change temperature, pressure, and volume of the container to maximize production of SO3. Increase, decrease, or expect no effect
HCL acid solution is standardized using 0.502g of sodium carbonate. Find the molarity of the acid if 30.5mL are required for the titration.
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