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A) What is the deactivation in fluorescence and list and explain the main reason for it?
B) What it the difference between fluorescence and phosphorescence instrumentation?
Radio station KLBJ broadcasts at a frequency of 93.7 × 106 s-1. Determine the length of the waves that corresponds to this frequency.
If 2.50 L N2 react with 7.00 L H2, what is the theoretical yield (in liters) of NH3? Assume that the volumes of reactants and products are measured at the same temperature and pressure.
What is the difference in electron geometry and molecular geometry? How to do you determine each on for say CH3Br and PF3?
J. D. Dojahn et al characterized the potential energy curves of the ground and excited electronic states of homonuclear diatomic halogen anions (F2-, Cl2-, etc). These anions have a 2Sigma(u)+ ground state and 2Pi(g), 2Pi(u), and 2Sigma(g)+ excite..
Compute the external pressure that must be applied to seawater 1.14 M total ion concentration at 10 C if the maximum concentration permissible in the product water is 176 mg/L. Presume that all the dissolved salts in the product water are sodium c..
Assume the mass of the dry air in the room stays constant at its initial value.
Calculate the freezing point and boiling point of a solution of 383 g of glucose dissolved in 400. g of water.
Which occupies a larger volume, 600 g of water (with a density of 0.995 g/cm3) or 600 g of lead (with a density of 11.35 g/cm3)? Energy Units
At equilibrium the concentration of NO in the vessel is 0.161M. At equilibrium the vessel contains N2, H2O and H2. What is the value of the equilibrium constant Kc for the following reactions
For each of the following polyatomic ions, provide a Lewis structure, including resonance if appropriate and all non-zero formal charges. A.) BH4- B.) HCO2- C.) AsCl4- D.) ICl2-
please convert thema 456 cal to joulesb 22.3 j to caloriesc 234 kj to caloriesd 12.4 cal to joules-calculate the amount
A sample of Nitrogen gas expands in volume fro 1.6 L to 5.4 L at constant temperature. Calculate the work done (in joules) if the gas expands
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