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The Line of the Lyman series of the hydrogen atom spectrum has the wavelength 9.50 x 10^-8 m. It results from an upper level to n=1. Define what is the principal quantum number of the upper level?
A method for determining the quantity of dissolved oxygen in natural waters requires a series of redox reactions. Balance the following chemical equations in that series under the conditions indicated
Calculate the entropy change in the surroundings associated with this reaction occuring at 25 degrees C. Show all your calculations. The change in enthalpy for the reaction is +163.2 kJ. 2N2(g) + O2(g) ---> 2N2O(g)
According to the following reaction, how many grams of silver chloride will be formed upon the complete reaction of 28.4 grams of copper(II) chloride with excess silver nitrate
a pigment suspected of being contaminated with arsenic is treated to convert any arsenic present into a solution of
A promising new method of treating various types of lymphomas uses beta particles from the decay of 90Y (each with an energy of about 1.44 x 10 -13 J) to aggressively destroy cancerous cells. If a 2.10 kg mass of body tissue exposed to the radiati..
what is happening when Nh4Cl is added to NH3 (a basic solution)? what is happening when HCl is added to NH3? how are these example
Calculate the temp of an argon sample at 55.4 kpa and 18.6L if it occupies 25.8 L at 75 degrees C And mass of 16g
the solubility of aspirin in ethanol is approximately 40g100ml at room temperature. if you had a 100 yield how many
Which response gives all of the members of the following list that are basic salts and none that are not basic salts?
What molarity of aqueous magnesium chloride solution can be expected to show the same conductivity as 0.0075 M aluminum sulfate at 15,000 units.
you have a 30.0 L cylinder of helium at a pressure of 132 atm and a temperature of 24 degrees Celsius. the He is used to fill balloons to a volume of 3.00 L at 1.07 atm and 29 degrees Celsius.
When optically active B was treated with CrO3 in pyridine, an optically inactive sample of A was obtained. Heating A with hydrazine in base gave hydrocarbon C, which, when heated with alkaline KMnO4, gave carboxylic acid D. Identify compounds A, B..
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