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Lactic acid (C3H6O3) which occurs in sour milk and foods such as sauerkraut, is a weak monoprotic acid.? The pH = 0.10 M solution of lactic acid is 2.43 What are the values of Ka and pKa for lactic acid
After the vessel was pressurized with hydrogen gas and heated to 80 degrees C, the monometer showed the initial pressure inside the "bomb" to be 77.2 atm. Assuming 100% yield, calculate the pressure that should be inside the "bomb" when the reacti..
Apart from the discrete energy values characteristic of a quantum mechanical system, is the result of an invidvidual measurement of the total energy identical to the result obtained on a classical system?
Which of the following, when added in equal molar amounts to the AgOH/water mixture, will lead to the greatest concentration of dissolved Ag+ at equilibrium?
Which silver salt will precipitate first? Show calculations to support your answer. What is the concentration of Ag+ when the first precipitate begins to form?
How much energy (in calories) is needed to heat 12cm^3 of fat from room temperature (25C ) to its melting point (35C)? Specific heat of fat 0.45 cal/(g*C, and the density of fat is .94g/cm^3)
Identify the intermolecular forces present in each of these substances. HCl, He, CO, HF Match these to the correct groups below. Dipole-dipole and dispersion only, Dispersion only
A solution containing sulfide ions is added to selectively precipitate one of the metal ions from solution. At what concentration of sulfide ion will a precipitate begin to form? What is the identity of the precipitate?
Trace amounts of rare elements are found within groundwater and are of interest to geochemists. Europium and terbium are lanthanide-series elements that can be measured from the intensity of their fluorescence emitted when a solution is illuminate..
Classify each of the following as an element, compound, homogeneous mixture, or heterogeneous mixture.
consider the reaction of 5.0g of propane with 10.0ml ofmolecular bromine to form 2,2 dibromopropane and hydrogenbromide. a. look up the molecular weight of propane (44.1) and calculate the moles of propane present before the reaction
What percentage of the Sr-90 that was formed in the detonation of the first fission bombs in August 1945 is still present in the environment in August 1982.
The specific heats of solid and liquid ethanol are 0.97 J/g-K and 2.3 J/g-K, respectively. How much heat (kJ)
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