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Utilizing the Bohr model for hydrogen-like atoms, make first-order approximates of the energies expected for the Kα, Kβ, Lα and Lβ x-ray fluorescence transitions as well as the ionization energy of an electron in the K shell. Report the energies in KeV (1 J=6.242x1015 keV).
What is the most important extra step that has to be included in the first approach technique for assigning electrons in a heteronuclear diatomic molecule?
The value of delta H for 2CO(g) + O2 (g) = 2CO2(g) is -482 kJ. Calculate the heat released to the surroundings when 38.5 g of O2 (g) reacts with excess CO
The enthalpy of solution for a solid with approximately equal delta h values for each of the steps involved in the solution formation process is
Some of the formulas below could be either molecular or empirical formulas; however, some could only be molecular formulas. Which of the following formulas must be molecular formulas
Diethyl amine density (1.0475 g/mL) Diethyl amine MW 73 Diethyl ether density (0.714 g/mL) Hint: Consider at which temperature the reaction is run. Which of the boiling points and melting points might come into play?
find the contour length (chain length) for a fully extended polythylene molecule that has a degree of polymerization of (n=45000),given that the length of c-c bond is 1.54 Ao.
how many grams of ammonium nirtate must have reacted if 3.75dm3 of nitrogen gas was collected over water at 26C and 97.8 kPa
Convince yourself that function exp(-4x) is an eigenfunction of operator d/dx. Compute the corresponding eigenvalue.
How many grams of ammonium nitrite must be decomposed if 98.5 liters of nitrogen are to be produced?
What is the molar solubility of PbI2 in water. For PbI2, Ksp=7.9x10-9. You may assume that the ions do not form ion pairs in solution.
Balance the following equation in standard form and determine the SUM of the coefficients. FeO(s) + O2(g) --> Fe 203(s)
The heat capacity of the gas, at constant pressure, is 20.8 J/molK. What is the total energy change delta U (in J) for the gas
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