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The first line of the Balmer series occurs at a wavelength of 656.3 nm. What is the energy difference between the two energy levels involved in the emission that results in this spectral line?
Calculate the frequency (Hz) and wavelength (nm) of the emitted photon when an electron drops from the n=4 to the n=2 level in a hydrogen atom.
An electron in the hydrogen atom makes a transition from an energy state of principal quantum numbers ni to the n=2 state. If the photon emitted has a wavelength of 434 nm, what is the value of ni?
Give the values of the four quantum numbers of an electron in the following orbitals:a) 3sb) 4pc) 3d
The ground-state electron configurations listed here are incorrect. Explain what mistakes have been made in each and write the correct electron configurations.Al: 1s^2 2s^2 2p^4 3s^2 3p^3B: 1s^2 2s^2 2p^5F: 1s^2 2s^2 2p^6
Sorbic acid, C5H7COOH, is a weak monoprotic acid with Ka = 1.7 x 10-5. Calculate the pH of a solution containing 11.25 g of potassium sorbate in 1.75 L of solution.
Thermal equilibrium, 10.0g of Fe(s) at 98.0 degrees Celsius is placed in 50.0mL of H2O(l) at 20 degrees Celsius
Determine the pressure inside a container of a gas connected to an open-end manometer filled with CCl4, has the density = 1.594 g/cm3,
Write the structures of the saytzeff elimination
what is the molar mass of a gas that has a density of 1.02g/L at 0.990 atm pressure and 37 o C
If 1.50g (NH4)2SO4 is dissolved in enough water to form 250 ml of solution, what is the molarity of the solution.
150.g of NaCl completely dissolves (producing Na+ and Cl- ions) in 1.00k of water at 25.0C. The vapor pressure of pure water at this temperature is 23.9torr.
A physiological saline solution contains 164 mEq/L each of Na+ and Cl-.How many moles each of Na+ and Cl- are in 0.500 L of the saline solution.
How much energy (in kilojoules) is required to convert 110 mL of diethyl ether at its boiling point from liquid to vapor if its density is 0.7138 ?
Combustion Analysis of Toluene, Combustion analysis of toluene, a compound containing carbon and hydrogen only, gives 5.86 mg carbon dioxide and 1.37 mg of water. What is its empirical formula?
Determine what amount of heat is required to increase the temperature of sixty grams of ethylene glycol from 15.1 degree Celsius to 40.3 degree Celsius?
If 3.00 moles of ZnS are combined with 4.00 moles of O2 how many moles of ZnO can be produced and how many moles of the excess reactant will be left over?
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