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The visible part of the hydrogen atom spectrum is called the Balmer series (n1 = 2). The violet line has a wavelength of 410.2 nm. What is the initial energy level (n2) of the electron for this transition?(1) 1 (2) 2 (3) 3 (4) 4 (5) 6.
What is the concentration of g salt per 100 g water of a saturated solution in which 3.82 g of salt are dissolved in 9.54 g of water?
Furoic acid, HC5H3O3, has a Ka value of 6.76 10-4 at 25C. Calculate the pH at 25C for a solution formed by mixing 28.0 mL of 0.260 M HC5H3O3 and 23.0 mL of 0.21 M NaC5H3O3 and diluting the total volume to 125 mL.
The amount of nitrogen in an organic substance can be determined by an analytical method, called the Kjeldahl method, in which all the nitrogen in the organic substance is converted to ammoinia.
solution if its conjugate acid. What is the pH of this combined solution? Always give two numbers after the decimal place
Given the following data table of average bond enthalpies, estimate the ΔH^rxn for the reactions 2H2+O2-- 2H2O. What is the hybridization of xenon in each of your Lewis resonance structures?
What is the maximum amount of aluminum sulfate that can be formed?
What are the differences between sub-energy levels and orbitals? (My professor said they were different.)
What is the pH of a solution in which 323 mL of HCl(g), measured at 26.8 degrees Celsius and 1.02 atm, is dissolved in 1.5 L of aqueous solution?
Calculate that how many grams of potassium chloride remain dissolved and how many grams came out of this given solution?
Ksp for PbCrO4 at 25oC is 2.0 x 10-14. A sample of 1.000 mg of PbCrO4 is added to 1.0 L of water at this temperature.
a balloon is filled to a volume of 7.00 times 10^2 mL at a temperature of 20.0 degrees celcius. the balloon is then cooled at constant pressure to a temperature of 1.00 times 10^2 K. what is the final volume of the balloon?
Write a balanced net ionic equation for the neutralization reaction and Tartaric acid,( C4H6O6) , has two acidic hydrogens.
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