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Why was acetyl chloride /ethanol used as source of hydrocholic acid instead of aqueous hydrocholic acid.
A 1.37 gram antacid tablet is added to 25.00 mL of 0.4500 M HCl. After the resulting reaction was complete, back titration required 10.40 mL of 0.1212 M NaOH. Assuming that the tablet contained only calcium carbonate and an inert binder calculate the mass of calcium carbonate and mass percent of calcium carbonate.
Be sure to include a concise discussion of the reasoning. Construct tables summarizing the IR and 1H NMR data, and assign the peaks in the IR and NMR spectra to the appropriate structural elements in U. Explain the appearance of the base peak at m..
write the net ionic equation for a solution of calcium chloride and a solution of mercury(1) nitrate
Predict the order of elution for benzoic acid and methyl orange in normal phase column chromatography using polar SiO2 as the stationary phase. In other words, which compound should come off the column first? The structures of benzoic acid and met..
Propose structures for aromatic hydrocarbons that meet the following descriptions:
Calculate the equilibrium constant for the reaction
While preparing oxalate buffer, technicican by mistake added 0.1 M of CaC2O4. (pKsp = 7.9) to 0.2 M solution of oxalic acid(pKa's 1.25; 4.26).
Calculate the equilibrium concentration ratio of phosphocreatine to creatine in the following reaction if the concentrations of ATP and ADP are 8.0 mM and 1.6 mM, respectively.
When 4.00 g of hydrogen nuclei fuse to form helium in the sun, 0.0265 g of matter is converted into energy. Use Einstein's equation, E = mc2, to calculate the energy equivalent of this change in mass.
Assuming levels of atmospheric CO2 are 390 ppm CO2, what is the pH of rainwater in equilibrium with the atmosphere for the pre-industrial atmospheric CO2 concentration of 280 ppm,v
Describe the various strategies for the excretion of nitrogenous wastes employed in higher animals (chordates), both human and non-human.
Using the bond energies below determine the value and sign of delta H
Approximately how much water will you need to use to prepare the hot saturated? Upon cooling in an ice-bath and subsequent filtration, how much pure phthalic acid would you expect to recover? show calculations
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