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Explain what is the energy of the photon that is emitted when the state of an electron changes from n=4 to n=2, in a hydrogen atom? (R =3.29 x 1015 Hz)
Hydrocarbon chemistry problems, For the compound, 1,2-dibromoethane, the most stable conformation would be
a cylindrical specimen of a brass alloy 10.0 mm 0.3937 in. in diameter and 120.4 mm 4.740 in. long is pulled in tension
What purpose does a GC oven serve. Is there some benefit to increasing this temperature. Is there some temperature above which we will see negative results. Is there a temperature which is too low.
Calculate the concentrations of all species in a 1.00 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4× 10-2 and Ka2 = 6.3× 10-8.
The density of titanium metal is 4.51g/cm3 at 25C. what mass of titanium displaces 125.0ml of water at 25c.
a 13 ml sample of a solution of pbclo32 was diluted with water to 17 ml. a 15 ml sample of the dilute solution was
give one piece of experimental evidence that more than 1 mole of particles is formed when 1 mole of a salt dissolves in
Calcium carbide is an intermediate in the manufacture of acetylene. (Calcium carbide was also used for years in mining lamps.) Its chemical formula is CaC2. What is the bond order of the C22- ion
Which of the following is the correct pH of a 211.7 mL solution (final volume) of pure water after 52.3 mL of 1.00 mM HCl was added
Given that aprotic solvents are not practical for unimolecular processes (little if any reaction occurs via a unimolecular pathway) draw the skeletal structure of the major organic substitution product when (2S,6R)-2,6-dibromo-6-methyloctane is tr..
The original conditions on a container filled with gas at a constant temperature are 180 cc and 300 mm Hg. The desired new volume is 90 cc.
The molarity of the potasium solution. How many mls of potassium chromate solution would be requiered to react completely with 47.3 ml of the barium chloride solution.
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