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(a) Given that Ka for acetic acid is 1.8 X 10-5 as well as that for hypochlorous acid is 3.0 X 10-8, which is the stronger acid? (b) Which is the stronger base the acetate ion or the hypochlorite ion? (c) Compute Kb values for CH3COO- and ClO-.
Household bleach is a 5.0 mass % aqueous solution hypochlorite, NaOCl. What is the mole fraction of the NaOCl in the bleach
The active ingredient of aspirin is acetylsalicylic acid, a monoprotic with a ka = 3.3 x 10 raised to -4 power. What is the pH of a solution dissolving two aspirin tablets, each containing 325 mg of acetylsalicylic acid, in 250 ml of water
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
Provide a structure for the following compound: molecular mass 101; IR: 3397, 3200, 1655, 1622 cm-1; 13C NMR: ? 27.5, ? 38.0 (weak)
If 0.00523 mol N2O(g) effuses through an orifice in a certain period of time, how many moles of N2O5(g) would effuse in the same time under the same conditions
The carburizing gas holds the surface composition at 1% carbon for all t > 0. If D=1.4 x 10^-7 cm^2/sec: (a) Calculate the time required at the carburizing temperature
a sample of neon gas collected at STP occupies a volume of 18.8 L . How many moles of gas does the sample contain?
The freezing point of pure benzene is 5.5 Celsius and its freezing point constant is 5.12 C/m. Calculate the molecular weight of the unknown.
32P is a radioactive isotope with a half-life of 14.3 days. If you currently have 49.1 g of 32P, how much 32P was present 7.00 days ago
What is the coefficient of Br- when the following redox equation is correctly balanced. Show the balanced equation. BrO- + Fe(OH)2 > Br- + Fe(OH)3 (basic solution)
A sample with a concentration of 0.240 M has an absorbance of 0.34 in a 1.0 cm path length cuvet. What would be the absorbance expected if a) the sample is diluted to a concentration of 0.120 M and b) if the path length with the original solution ..
an unknown rectangular substance measures 3.6 cm high 4.21 cm long and 1.17 cm wide. if the mass is 21.3g what is this
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