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What is the Copenhagen theory and how is it different from the quantum theory?
A 270 mL stock solution contains 0.9 M Ca(CN)2. When 103 mL of the stock solution is diluted to 130 mL, how many moles of CN- ions will be contained in the dilute solution?
you take an unknown solution and measure 1ML of it into a flask. You dilute it with 25mL of water and 10mL of H2SO4. You titrate the solution with 19.80 mL of KMnO4. The (MnO4)- is reduced to (Mn) 2+ by the unknown solution. What is the normality ..
How much 0.100 M HC2H3O2 and 0.100 M NaC2H3O2 are required to prepare 20.0 mL of a buffer with a pH of 5.000
Which of the following chemical shifts would correspond to an aldehyde proton signal in a 1H NMR spectrum
calculate the moles of h2 present in this gas sample. . 9. 1.0 gram of water at 25 c is heated to 100 c at which point
Calculate the distance olive oil (a lipid) could move in a membrane in 15 seconds assuming the diffusion coefficient is 1 μm2/s. Use the equation where S is distance traveled, t is time, and D is the diffusion coefficient.
a helium balloon with a volume of 410 mm is cooled from 48 deg celsius to -37 deg the pressure on the gas is reduced
Question- The equilibrium constant for triiodide formation from iodine and iodide is about 700. The extinction coefficients of iodine and triiodide at the absorption maximum of triiodide are about 16 and 25,000 respectively.
Problem- Some of the formulas below could be either molecular or empirical formulas; however, some could only be molecular formulas. Which of the following formulas must be molecular formulas? Select all that apply.
What molar ratio of benzoate ion to benzoic acid would be required to prepare a buffer with a pH of 5.20? [Ka(C6H5COOH) = 6.5 × 10-5]
Depict the skeletal structure of the major organic product produced when 2-methylpropanoylchloride reacts with 3-methylbutanoicacid in the presence of the weak base, pyridine.
A 2.50 g sample of an unknown gas occupies 885 mL at 697 mm Hg and 40 C. What is the molar mass of the unknown gas
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