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For a particle in two-dimensional 1 box L1 = L2 = L tabulate the energy values in the lowest 4 energy levels (as multiples of E where E = H2 /8mL2) as well as degeneracy of each level.
NH3 is a weak base (Kb = 1.8 x 10^-5) and so the salt NH4Cl acts as a weak acid. What is the pH of a solution that is 0.044 M in NH4CL
If the absorbance of a sample of Diet Dr. Pepper is 0.215 at 214nm, what percentage of the 214nm radiation falling on the sample passes through it?
What does a yellow flame in the Bunsen burner indicate? How can this be corrected? Why use a funnel to transfer large volume of liquid from one container to another?
Butyric acid (a monoprotic acid) is responsible for the foul smell of rancid butter. the pKa of butyric acid is 4.84. calculate the pH of a 0.05M sloution of sodium butyrate
Write the name of the major organic product obtained from the reaction between 1-phenyl-1-ethanol and concentrated sulfuric acid when heated.
A sample of Nitrogen gas at 24.8 degree C and 61.2 torr occupies a volume of 16.6 L. What will the gas pressure be if the volume is changed to 44.4 L and the temperature is changed to 38.5 C
A block of metal has a width of 3.2 cm, a length of 17.1 cm, and height of 3.5 cm. Its mass is 1.2 kg. Calculate the density of the metal.
The gas above the top liquid is at an absolute pressure of Pg. Furthermore, the densities and heights of liquid 1 and liquid 2 are P1 and P2 , and L1 and L2 , respectively. In terms of these given symbols, waht is the absolute pressure at the bott..
If 348 grams of K2SO4 (molar mass 174 grams) is dissolved in enough water to make 500 milliliters of solution, what are the concentrations of the potassium and sulfate ions.
Use the Rydberg equation to calculate the wavelength in nanometers of the spectral line of hydrogen for which n2 = 4 and n1 = 2.
If units were explicitly specified for Kp of the reaction above, they would be [atm]n. What would be the value of n for this reaction?
in the laboratory a student named georgia weighed 5.95 g of an unknown solid mixture containing benzoic acid copper ii
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