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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 minimum volume % of vapor that gives a combustible mix is called the lower flammable limit (LFL). Generally, the LFL is about half the stoichiometric mixture, the concentration required for complete combustion of the vapor in air.
Consider the following reaction. Hydroquinone is the oxidizing agent. Hydroquinone Benzoquinone 2(ag)^+ 2OH^- ---> +2(ag) + 2H2O
A Sample of 4.6434g of benzoic acid, C7H6O2, is dissolved in 50.0033 g of camphor. What is the freezing point of the resulting solution. For camphor, Tf= 179.5 C, Kf = 40C/m
what is the value of Kc for the following reaction at equilibrium: CO2(g) + H2(g) CO(g) + H2O(g) if [CO]=.20 M, [H2O]=.30 M, [CO2]=.30 M, and [H2]=.033M?
Use the Rydberg equation (1 / wavelength = (1/n(smallest)^2 - 1/n(largest)^2) to calculate the wavelength of this transition in nanometers (nm) and to three significant figures.
the intermediate(s) structure and reaction conditions, They are multistep so if you could please explain the route you chose
consider an excited-state hydrogen atom. What is the energy of the electron in the n = 3 level? ground state energy
The standard enthalpy change for the reaction below is -905.4 kJ (for the reaction as written). What is the standard enthalpy of formation of NO(g)
what is the rate that sulfur hexafluoride would effuse through a system that allows oxygen to effuse at 22.1mL/min
A compound is known to contain 52.17% carbon and 27.78% oxygen by mass. Each molecule contains two atoms of oxygen. What is the molar mass of this substance
Describe the role of the citric acid cycle as a central metabolic mechanism. Explain what happens to the cells' abilities to oxidize acetyl CoA when intermediates of the cycle are drained off for amino acid biosynthesis.
Match the following properties of liquids to what they indicate about the relative strength of the intermolecular forces in that liquid. Strong intermolecular forces: Weak intermolecular forces
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