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Suppose that hydrogen atoms are prepared in the n=2 energy level. calculate the wavelength of light emitted by these excited atoms when returning to the ground state.
when atoms lose more than one electron, the ionization energy to remove the second electron is always more than the ionization energy to remove the first.
How many seconds are required to produce 1.0 g of silver metal by the electrolysis of a AgNO3 solution using a current of 30 amps?
dilute to mark with water and mix. (You will need the extra volume of this most concentrated solution for further studies.) Record your actual standard concentrations accounting for the dilution as Cstd1, Cstd2, Cstd3, and Cstd4, respectively.
Use the Ksp values in the table 16.2 to calculate the molar solubility of the following compound in pure water. Before Addition ~0.00mol 0.100mol 0.100mol
What is the lead concentration of a saturated solution of lead(II) sulfate containing 0.010 molar Na2SO4
Trimethylamine (CH3)3N is a substance responsible in part for the smell of fish. it has a boiling point of 3.5 degrees c and a molecular weight of 59.1.
how many no. of hydrogen ions are present in 10 millionth part of 1.33 cc of pure water at 25 degree celsius.
You need to prepare 2.00 L of 0.100 M Na2CO3 solution. Describe the best procedure.
If you put 120 volts of electricity through a pickle, the pickle will smoke and start glowing an orange-yellow color. The light is emitted because the sodium ions in the pickle become excited; their return to the ground state results in light emis..
the diffusion coefficient for nitrogen in the metal at 1150 C is 1x10^-11 m^2/s and the end is 3.5 kg/m^3, what is the nitrogen concentration at a position 2mm into the sheet away from higher concentration end?
A buffer solution is prepared by mixing 20.0 mL of 0.032 M benzoic acid C6H5COOH(aq) solution with 25.0 mL of 0.022 M NaC6H5COO(aq). What is the pH of the buffer produced? (Ka of benzoic acid = 6.2x10^-5).
In trans-1,2-dibenzoylethylene, even though the conjugated C=O group frequency coincides directly with the expected C=C stretching fequency, we would not have expected to observe the late stretching mode in the infrared spectum. Why?
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