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Calculate the pZn of a solution prepared by mixing 25.0 mL of 0.0100 M EDTA with 50.0 mL of 0.00500 M Zn2+. Assume that both the Zn2+ and EDTA solutions are buffered with 0.100 M NH3 and 0.176 M NH4Cl to provide a constant pH of 9.00.
Find the formula of a compound using stoichiometry and ideal gas equation and Deduce from these data the corresponding equation and write formulas for the oxide and sulfate of M .
One beaker contains 10.0 mL of acetic acid/sodium acetate buffer at maximum buffer capacity and another contains 10.0 mL of pure water. Calculate the hydronium ion concentration and the pH after the addition of 0.25 mL of .10 M HCl to each one.
what are the goals of this project. please answers have to be related to chemistry and specifically to this experiment.
Using the entropies at 298 K, the heat capacities of the substances involved, and such other data as are necessary, calculate the standard entropy of reaction (ΔS°) at 1000 K for the reaction:
Calculate the solubility of KBR at 23'C. Assume that the solubility increases by an equal ampunt od degrees between 20'C and 30'C
A 0.150-mole quantity of NiCl2 is added to a liter of 1.20 M NH3 solution. What is the concentration of Ni2 ions at equilibrium. Assume the formation constant* of Ni(NH3)62 is 5.5 × 108.
Using the technique of the previous problem ?E was found to be -2,000.00 kJ/mol at 298 K for an unknown liquid hydrocarbon. In another experiment it was determined that for each mole of hydrocarbon
a 0.4 kg aluminum part increases its temperature by 25 degrees celsius. how much thermal energy is transfered to the part by heat?
In the synthesis of benzopinacol via photoreduction of benzophenone, why does benzopinacol precipitate from the solution despite being an alcohol
How many grams of magnesium oxide are formed when 14.8 of oxygen gas, measured at STP, completely reacts with magnesium metal according to this reaction
A buffer solution is prepared by adding 1.5 g each of benzoic acid and sodium benzoate in 150.0 mL of solution. what is the pH of the buffer solution
As a technician in a large pharmaceutical research firm, you need to produce 450. of 1.00 potassium phosphate buffer solution of = 7.38. The of is 7.21. You have the following supplies: 2.00 of 1.00 stock solution
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