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The active ingredient in aspirin is acetylsalicylic acid, HC9H7O4, a monoprotic acid with Ka = 3.3 x 10-4 at 25°C. What is the pH of a solution obtained by dissolving two aspirin tablets, each containing 325 mg of acetylsalicylic acid in 100. mL of water?
the normal boiling point for mercury is 357c. what is the boiling point at an elevation where the atmospheric pressure is 635 torr.
The pka of the carboxyl group is 3.0. you have 500liters of 0.1 M acetylsalicylic acid. how much solid sodium hydroxide has to be added to convert all of the acetylsalicylic acid into sodium acetylsalicylate
Rubidium atoms are bombarded with 131 nm light. What is the kinetic energy of the ejected electrons
Problem- Rank the following hydrocarbons in order of increasing octane number. a = heptane b = cyclohexane c = toluene d = isooctane Select one:
When 1 mol of Fe2O3(s) is formed by combustion of Fe(s)with O2(g), 824 kJ of heat is liberated. By this reaction, how many mol of Fe should be consumed in order to liberate 100. kcal of heat
Given: Ionization energy of F2- is 290 kJ: Calculate the bond energy of F2-. Not given but needed: bond energy of F2 and ionization energy of F-.
calculate the mass percent of a solution in which 176 of is dissolved in 3.08 of water at 25 density 0.997
Would a reaction occur if a piece of Sn metal were placed in a ZnSO4 solution. if so write a net ionic equation
Calcium nitrate solution is added to a solution of sodium phosphate
2300 grams of water is heated. If this water starts at a temperature of 17 degrees Celsius, what amount of heat is needed to boil away all of this water?
What mass of concentrated sulfuric acid (98.0 % H2SO4 by mass) must be used to react completely with 164.9 g of Ca3(PO4)2
Will the reaction shift towards the products or the reactants if Ag+ Ions are added to this equilibrium. CoCl4^2-(aq) + 6H2O(l) Co(H2O)6^2+(aq) + 4Cl-(aq)
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