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A Diels-Alder reaction of 2,5-dimethylfuran and maleic anhydride gives a compound A that undergoes acid-catalyzed(H2SO4) dehydration to give 3,6-dimethylphthalic anhydride. Could you please show the reaction in six steps with the curved arrow mechanism, show all the lone pairs,complete the structure of sulfuric acid or the hydrosulfate ion as necessary and complete each organic framework. Don't include the water.
P4(s) + F2(g)-> PF3(g) What mass of F2 is needed to produce 187 g of PF3 if the reaction has a 80.1% yield?
How many grams of dry NH4Cl need to be added to 2.10L of a 0.500 M solution of ammonia, , to prepare a buffer solution that has a of 8.84? Kb for ammonia is 1.8*10^-5.
If solar radiation is 1200 W/m^2 , how many photons strike the leaf every second? Assume three significant figures and an average wavelength of 504 nm for solar radiation. A green leaf has a surface area of 2.75 cm^2 .
exactly 16.9mL of EDTA are required to reach the EBT endpoint. calculate the total hardness in ppm CaCO3.
What is the maximum number of distinct emission spectral lines (lines of different wavelengths) that can be observed from this system? Calculate the wavelength of the 4 ---> 3 transition.
An unknown substance is empirically determined to be 40.00 percent carbon by weight, 6.67 percent hydrogen, and 53.33 percent oxygen. its molecular weight is roughly 55g/mol. determine the molecular formula and its correct molecular weight.
at 520 degrees celius the equlibruim mixture in a three cubic decimeter container consists of 0.2 moles of h2 and 0.2 mole i2 , if the equlibrium contant is o.016, calculate the concentration of hyrdogen iodide at equlibrium HI.
A solution of PbI2 has [Pb2+] = 4.5 x 10-5 and [I-] = 6.5 x 10-4. PbI2 has Ksp = 8.7 x 10-9. Write down the reaction that is taking place. Calculate Q. Is Q larger or smaller than the Ksp? Is the solution unsaturated, saturated, or supersaturated?..
How many grams of a stock solution that is 87.5 percent H2SO4 by mass would be needed to make 275 grams of a 55.0 percent by mass solution.
A student titrated a .4630g sample of unknown monoprotic acid with 0.1060m NaOH. Using a derivative curve, the student found, the equivalence point volume to be 28.70mL of NaOH
Propose a step-by-step microscale extraction procedure that could be used to separate a mixture nitrobenzene, 4-methoxybenzoic acid, and benzylamine into the pure compounds using extraction technique.
Calculate the molality, molarity and mol fraction of a 25.4% (by mass) aqueous solution of phosphoric acid (H3PO4). in one litre of solution.
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