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Write a chemical equation for Ca(OH)_2 (aq) showing how it is an acid or a base according to the Arrhenius definition.
An oil bath maintained at 50.5 oC loses heat to its surroundings at the rate of 4.68 kJ/min. Its temperature is maintained by an electrically heated coil with a resistance of 60 operated from a 110 V line.
complete all the blank entries in the given table. then use the data to graph toscale the fixed variable average fixed
Calculate the volume of 1.94×10-3-M H2SO4 solution needed to provide 4.83×10-3 g of H2SO4.
Assuming the structures above gave molecular ion abundances of 12, 70, and 23(dexchlorpheniramine, 9-aminoacridine and pilocarpine, respectively), what abundances would you expect for the M+1 and the M+2 peaks for each structure?
A solution is made by mixing 12.0g of NaOH and 70.0mL of 0.200m HNO3. Calculate the concentration of OH- ion remaining in the solution.
Calculate the maximum mass in grams of H2S that can form when 155 g aluminum sulfide reacts with excess water according to: Al2S3 + H2O => Al(OH)3 + H2S [unbalanced]
Calculate the pH of a solution that is .150 M in sodium formate and .200 M in formic acid (Ka=1.8*10^-4)
What is the change in the chemical potential of the liquid. as a function of change in temperature assuming the entropy near the boiling point is constant
The following solutions were mixed together: 50.0mL of a 0.761M FeSO4 and 20.0mL of a 1.05M K2Cr2O7 (in dilute sulfuric acid). What is the molar concentration of Cr+3 ions in the resulting solution
Ammonia will react with oxygen in the presence of a copper catalyst to form nitrogen and water. From 164.5°C to 179.0°C, the rate constant increases by a factor of 4.27. What is the activation energy of this oxidation reaction?
Is the solubility of a cation predictable from the position of its element in the Periodic Table? Is precipitate color predictable from the position of the cations element in the Periodic Table?
write a detailed mechanism for the reaction of salicylic acid with acetic anhydride showing clearly the function of the catalyst, sulfuric acid.
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