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Sulfate becomes bound to four Al(CH3)3 fragments in the dianion [Al4(CH3)12SO4]^-2. Using the bond angles and lengths as a guide decide if the Al(CH3)3 groups alter the SO4^2- group significantly upon formation of the [Al4(CH3)12SO4]^-2 product. Explain.
The forensic technician at a crime scene has just prepared a luminol stock solution by adding 10.0 g of luminol to H2O creating a solution with a total volume of 75.0 mL. What is the molarity of the stock solution of luminol?
dissolved in 100.0 mL water and titrated with 0.500 M NaOH; it takes 45.1 mL to reach the equivalence point. What is the molecular mass (g/mol) of pyruvic acid?
when 15.0 g of steam drops in temperature from 275.0 degc to 250.0 degc how much heat energy is released? cp of h2o
The Born-Haber cycle is a series of steps that represent the formation of an ionic compound from a metal and a nonmetal. For example, the steps in a Born-Haber cycle for the formation of NaCl(s) consist of sublimation of the metal Na atom
How many electrons must aluminum lose before it can reach a stable electronic configuration? Use the table of ionization energy to justify your answer.
If 3.50ml of vinegar needs 42.0ml of 0.130M NaOH to reach the equivalence point in a titration, how many grams of acetic acid are in a 1.20qt sample of this vinegar?
At 63.5oC the vapor pressure of water is 175 torr and that of ethanol (C2H5OH) is 400 torr. A solution is made by mixing equal masses of water and ethanol.
What is the pH of concentrated sodium hydroxide? NaOH FW=40.0 g/mol
If 10.00 mL of 0.050 M KI solution is mixed with 40.0mL of other reagents what would be the the diluted concentration of KI
What is the mole fraction of ethanol in a solution made by dissolving 14.6 g of ethanol in 53.6 g of water?
calculate the concentration of an naoh solution if 25.0ml of the solution is needed to neutralize 17.5ml of a 0.419m
a tank contains a mixture of 3.6 mol of n2 2.7 mol of o2 and 1.8 mol of co2 at 25degc and a total pressure of 10.0 atm.
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