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For a hydrogen atom, calculate the energy of a photon in the Balmer series that results from the transition n = 3 to n = 2. What is the region of the electromagnetic spectrum? The Rydberg constant is 1.097× 107 m-1.
The pH of a dimethylamine aqueous solution is 11.98. (CH3)2NH + H2O ? (CH3)2NH2+ + OH-, The dimethylamine solution is 0.146 M a) Calculate the Kb value for dimethylamine.
For the titration of 45.0 mL of 0.0100 M Sn2 by 0.0500 M Tl3 in 1 M HCl, using Pt and Ag | AgCl electrodes:(a) What is the balanced titration reaction
The reaction of Zn and Cu2+ produces a brown solid product. What is the identity of this product. Provide a balanced equation that shows the formation of this brown product
What mass of carbon dioxide is produced from the complete combustion of 6.50×10-3 of methane?
What is the percent dissociation of HNO2 when 0.056 g of sodium nitrite is added to 115.0 mL of a 0.057 M HNO2 solution? Ka for HNO2 is 4.0 × 10-4.
A student adds 0.1 mol of oxalic acid (H2C2O4) and 0.1mol of sodium dihydrogen phosphate to enough water to make 1.0L of solution. The following equilibrium is established with Kc from this reaction greater than 1
Which of the following properties indicates the presence of strong intermolecular forces in a liquid
A 4.50 g sample of NaOH at 25°C dissolves in 75.0 mL of water also at 25.0°C. The final equilibrium temperature of the mixture is 40.5°C. What is the enthalpy of solution, ?Hs, of NaOH expressed in kilojoules per mole
Draw the Lewis dot structure of phosgene. Include all 3 resonance forms by alternating the double bond among the 3 terminal atoms. Which resonance structure is best?
Potassium iodate, KIO3, and bleach's hypochlorite ion, ClO negative, are oxidizing agents. What do they oxidize in this experiment
Draw the products that correspond to syn addiction of Br2 to trans cinnamic acid and those that correspond to anti addition.
the leathal inhalation does of sarin for a 200 pound person has been determined to be .0015mg. determine the ld50 of
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