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Calculate the wavelength of light that is produced when the excited electron relaxes back tro ground state. givien sodium is the excited element 1s2 2s2 2p6 3s1 ground state is [Ne] 3s1
Find the energy of a photon of light if the wavelength of the light wave is 6.88 x 10-7 m.
Free radicals are also important in many environmentally significant reactions. For example, photochemical smog, which forms as a result of the action of sunlight on air pollutants, is formed in part by the following two steps.
The normal boiling point of bromine is 58.8 C. Given that the vapor pressure pressure of bromine is 75.0 torr at 2.5 C, Calculate the molar enthalpy of vaporization of bromine.
For AuCl, Ksp = 2.0 x 10-13 at 25°C. What is the solubility of AuCl at this temperature?
what is the ph of the 0.20 M NH3/0.20 M NH4Cl buffer after the addition of 10.0 ml of 0.10M HCl to 65.0 ml of the buffer.
how many grams of CaCl2 should be dissolved in 500.ml of water to make a 0.20m solution of CaCl2
The professor wants us to do the following: Outline all steps in the possible synthesis of each of the following compounds from benzene and / or toluene
Calculate the work done in joules, when 4.5 L of argon expands to 11 L at constant temperature against an external pressure 545 torr.
Starting with standard reduction potentials calculate the values of e cell and delta g of the following reactions:
A 24-kg child receives 2.85x10^6 B particles, each with an energy of 4.30x10^-13 J. If the RBE=0.40, how many millirem did the child receive?
heptapeptide upon HCL hydrolysis produced equimolar amounts of ASP, CYS, GLU, LYS, PHE, TYR, VAL and ammonia. Exposure of the intact heptapeptide to FDNB followed by hydrolysis produced DNP-VAL
Acid chlorides are used as electrophiles in the Friedel-Crafts reaction to prepare aromatic ketones. The reaction involves the transfer of an aromatic hydrocarbon with an acyl chloride in the presence of a lewis acid
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