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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.
how does the hammonds postulate explain?a. the greater selectivity for bromination vs. chlorination of an alkane?b. the
Explain when doing a recrystallization using a Buchner funnel, what happens to the impurities that are more soluble than your compound in the solvent used
A particular laser consumes 140.0 Watts of electrical power and produces a stream of 2.59×10^19 photons/second 1012nm. What is the percent efficiency of the laser in converting electrical power to light
Mercury (I) cyanide is a severely toxic substance with a Ksp of 3.8x10^-40. If the following solutions are combined, what is the final concentration of cyanide? i. 500. mL of a 0.47 M Hg2(NO3)2 solution; ii. 500. mL of a 0.77 M NaCN solution
Identify the reagents you would need to make the following substance via Grignard synthesis, and briefly describe your synthetic strategy.
How do you rank crystal lattice structures in order of decreasing efficiency of space in the structure
Write the balanced reaction for nickel(II) carbonate reacting with sulfuric acid. Nickel(II) sulfate, carbon dioxide gas, and water are the reaction products.
A 0.00100 mol sample of Ca(OH)2 requires 25.00 mL of aqueous HCl for neutralization according to the reaction below. What is the concentration of the HCl
Calcium carbonate decomposes to form calcium oxide and carbon dioxide on strong heating. What is the volume of carbon dioxide released, measured at r.t.p, when 10.5 g of calcium oxide is formed?
The gas-phase reaction shown, between N2 and O2, was run in an apparatus designed to maintain a constant pressure. Writea balanced chemical equation for the reaction depicted and predict whether w is positive, negative, or zero.
The capacitance CL is found to be 15 f F. Consider the recharge operation with the gate of Qp at 0 V, and assume that at t =0, CL is fully discharged. Calculate the rise time of the Output voltage, defined as the time for vY to rise from 10% to 9..
Choose the selection which most accurately gives both the value of the angle numbered 21 and the value of the angle numbered 22 in the figure above.
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