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A student found an old bottle labeled "thymol" on the stockroom shelf. After noticing a pleasant odor, she obtained the following mass, IR, and NMR spectra. The NMR peak at d4.8 disappears on shaking with D2O. Propose a structure for thymol, and show how your structure is consistent with the spectra. Propose a fragmentation to explain the MS peak at m/z 135, and show why the resulting ion is relatively stable.
If 26.64 mL of a standard 0.1650 M NaOH solution is required to neutralize 39.00 mL of H2SO4, what is the molarity of the acid solution
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
Cu2+(aq) + Zn(s) ---> Cu(s) + Zn2+(aq) A galvanic cell that uses the reaction shown above has a standard state electromotive force of 1.1 volts. Which of the following changes to the cell will increase the voltage
1)What is the percent ionization of HA in 0.11 mol/L HA(aq) if HA is a weak acid with pKa=6.00. Enter your answer accurate to three significant figures.
a 12.6 g sample of nh4no3 is dropped into a constant-pressure calorimeter containing 175 g of water at 23.5 c. what
Strong base is dissolved in 625 mL of 0.200 M weak acid (Ka = 3.18 x 10-5 M) to make a buffer with a pH of 4.13. Assume that the volume remains constant when the base is added. Calculate the pKa value of the acid and the number of moles of acid in..
A reaction is A--->P with the a reaction order of 2/3 with respect to A. What is the integrated rate law expression for this reaction, starting with the differential form of the rate law
Determine the theoretical yield of H2S (in moles) if 4.0 mol Al2S3 and 4.0 mol H2O are reacted according to the following balanced reaction.
The following solutions are mixed: 35.0 mL of 0.200 M Ca(OH)2 are mixed with 60.0 mL of 0.125 M HBr. What is the pH of the resulting solution. Assume additive volumes.
Problem- What is the nickel ion concentration in a solution prepared by mixing 385 mL of 0.432 M nickel nitrate with 413 mL of 0.396 M sodium hydroxide. The Ksp of nickel hydroxide is 1 × 10-16
What is the structural Drawing for Cyclopentane?
Question- A piece of zinc is dropped into a hydroiodic acid solution. The gas produced is collected at a temperature of 40oC in a 2.00L flask. Its pressure is measured as 0.245 atm. What is the pressure of the hydrogen in the flask
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