To what energy level does the electron move
An electron in the n=5 level of a hydrogen atom emits a photon wavelength 1282.17 nm. To what energy level does the electron move?
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What would you run as controls to be certain the ferric chloride test was working as predicted? What results would you expect for your control tubes?
An aqueous solution is 22.0% by mass ethanol, CH3CH2OH, and has a density of 0.966 g/mL. What is molality of ethanol
Use the dipole moments of HCl and HF ( HCl = 1.08, HF = 1.82) together with the percent ionic character of each bond ( HCl = 20% ionic, HF = 45% ionic) to estimate the bond length in each molecule.
744.5 g of a nonelectrolyte are completely dissolved in sufficient water to make 1.50 L of an aqueous solution at 25.0oC. The osmotic pressure of the solution is 59.9 atm. What is the molar mass of the nonelectrolyte, in g/mol?
Starting from rest the motorboat travels around the circular path, p=50 m at a speed v=(0.8t) m/s where t is in seconds. Determine the magnitudes of the boat's velocity and acceleration when it has traveled 20 m.
Calculate the new volume of a 7.0Liter balloon if the pressure is reduced from 1.0 atmosphere to 0.80 atmosphere (assume the temperature remains constant).
A solution has an H3O1+ concentration of 1.7 10-2 M. What is the hydroxide ion concentration?
The reaction of 1-bromopentane with sodium iodide to give 1-iodopropane is endothermic. Explain what strategry you would use to obtain a good yield of product from this reaction.
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