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In the spectrum of atomic hydrogen, a violet line is observed at 434nm. Determine the beginning and ending energy levels of the electron during the emission of energy that leads to the spectral line.
What molarity of aqueous magnesium chloride solution can be expected to show the same conductivity
Using structures and your own words, explain why acetic acid (CH3COOH; you can look up the structure of the carboxylic acid if you're unsure) is more acidic than ethanol (CH3CH2OH)
In the photosynthesis reaction, how is the equilibrium yield of glucose(C6H12O6) affected( increaed, decreased, no change) by the following action water is added.
Aerosol cans carry clear warnings against incineration because of the high pressures that can develop upon heating. Suppose that a can contains a residual amount of gas at a pressure of 770 mmHg and a temperature of 30 C
Determine the pH of a 50.00 ml solution made up of 0.9602g of disodium salt of maleic acid (Na2A) and 0.522 g of the monosodium salt (NaHa) following the addition of
Calculate the wavelength, in nanometers, of the spectral line produced when an electron in a hydrogen atom undergoes the transition from the energy level
Explain is the S-X bond length in one molecule longer than the other X = H, F, Reduce the relative direction of the dipole moments for the two molecules. Molecules are H2S as well as SF2
Determine the mass of sodium formate that must be dissolved in 450.0cm3 of a 1.2M solution of formic acid to get a buffer solution with pH = 3.70.
In the microscale oxidation of a Xylene to a Phthalic Acid, 825 mg potassium permanganate, 100 mg sodium carbonate, 3 mL water were put in flask and warmed then 125 microliters of unknown xylene and 10 mg detergent were refluxed for 45 minutes.
the net change in entropy of the system and surroundings considered together must be a positive quantity; (e) the entropy of the universe must remain constant.
A certain reaction has an activation energy of 63.62 kJ/mol. At what Kelvin temperature will the reaction proceed 4.50 times faster than it did at 347 K
calculate the percentage of empty space in 1 mol of water at 25C. Obtain the density from the experiment " Some Measurements of Mass and Volume." The volume of a molecule of water can be taken as the sum of the volumes of the two hydrogen atoms.
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