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What is the approximate pH of a solution of the salt NH4(O2CCH3) (ammonium acetate)? No calculations -- only reasoning needed. pKa/pKb values in your notes. pH is approximately independent of concentration for this souliton.
Calculate the standard enthalpy of formation of carbon disulfide (CS2) from its elements, given the following data.
Assume also that on a yearly basis the lake is completely mixed, and that the small river flowing into and out of the lake can be neglected as far as acidification is concerned. How many years will it be before the lake will reach a pH of 5.0?
A 1.30 g sample of dry ice is added to a 745 mL flask containing nitrogen gas at a temperature of 25.0 degrees Celcius and a pressure of 715 mmHg.
Determine the structure of one active component and identify three functional groups on each molecule. Based on the functional groups present in the drug molecules, predict the physical properties of the molecule the drug would interact
The pressure is steeply increased to 100 bar. The volume of the liquid is decreased by 1 ml at this constant pressure. Find the deltaH and deltaU
The rate constant for the second- order reaction.starting with a concentration of 0.86m, calculate the concentration of NOBr after 57s.
For the decomposition of 10.9 Pa azomethane, CH3N2CH3, at 600 K the partial pressure is found
Four atoms of iron (Fe) are to be combined with three molecules of oxygen (O2). How many total iron atoms and oxygen molecules will be combined during the formation of Fe3O4?
The resulting solution freezes at 26.5 oC. If Kf for the solvent is 1.74 o C/m then determine the molar mass of the nonelectrolyte compound?
if 72g of NaCl is dissolved in enough water to make 500ml of solution, what will be the molarity of the solution.
what is the mole fraction of hydrogen in a gaseous mixture that consists of 8.00 g of hydrogen and 12.00 g of neon in a 3.5 liter container maintained at 35.20 degrees celsius?
solid NaI is slowly added to a solution that is 0.010 M in Cu+ and 0.010 M in Ag+. which compound will begin to precipitate first?
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