Find wavelength of the photon emitted when electron drops
For hydrogen, what is the wavelength of the photon emitted when an electron drops from a 4d orbital to a 2p orbital in a hydrogen atom? The Rydberg constant is 1.097 x 10-2 nm-1.
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While cleaning the organic stockroom, a student found a bottle of ethanol labeled "Denatured with Benzene." He decided to determine the concentration of benzene in the ethanol by acquiring the UV spectrum of the liquid in a 2.0 cm cell.
The calorimeter absorbs only a negligible quantity of heat capacity of the solution is 4.18J/celsius.g and that the density of the final solution is 1 g/mL, calculate the enthaply change per mole of BaSO4.
Consider the dissociation of hydrocyanic acid in water: If the starting concentration of HCN is 0.50 M, what is the concentration of all species at equilibrium?
Hot water passes through a copper tube, whose inner diameter is 20 mm, thickness is 3 mm, and length is 1 m. Outside, cool air flows across the tube at T_inf = 290 K.
Iron reacts with hydrochloric acid to produce iron (II) chloride and hydrogen gas. How many moles of HCl will react with 4.6 moles of Fe?
Calculate the enthalpy change (in kJ) associated with the conversion of 25.0 grams of ice at -4.00 °C to water vapor at 106.0 °C. The specific heats of ice, water, and steam are 2.09 J/g•K, 4.18 J/g•K, and 1.84 J/g•K, respec
Assuming that the pressure and amount of a gas sample remain constant, what will be the final volume of a 3 .84 L sample of a gas originally at 160 0C when heated to 280 0C.
A manufacturing facility processed 8 units total in one shift(8 hr) with 1 defective. The standard cycle time is 1 hr/unit and the operating time is 8 hr.
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