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Syrup reveals concentration of OH- ions is 5.0 x 10 to the negative 8th power M. What is the pH of the syrup?
Gallium-68 decays by positron emission, with a half-life of 68.3 min. How much 68Ga remains from a 10.0 mg sample after 683 min
To ensure that do not provide customers with substandard product, the local steel mill has instigated a quality control program using flame AAS. two of the trace elements they wish to monitor, Al and Ti, form stable oxides. Is this a potential pro..
State three acids, bases, and salts used in therapeutic processes. Describe how one of each is used in therapeutic processes.
How many moles of NaOH must be added to 0.550 L of 0.191 mol/L HC3H5O2(aq) to obtain a solution with pH=4.7? Assume the temperature is 25oC. (For HC3H5O2, pKa=4.89 at 25oC).
Calculate the pH of an HCl solution if 16.5 mL of this HCl solution is titrated with a 0.454 M NaOH and it took 5.65 mL of the NaOH to reach the equivalnce point.
Suggest a reason why the cyclic intermediate in the formation of methyl-e-4-methoxycinnamte from p-anisaldehyde, might have two important groups in a trans relationship
A coffee cup calorimeter contains 25.42g of water, at 21.0g deg C. Then 69.18g of water, with an initial temperature of 70.1 deg C, was added to the calorimeter. The final temperature of the water in the calorimeter was 23.8 deg C
Calculate the wavelength of a photon in nm emitted by a hydrogen atom when its electron drops from the n=5 state to the n=3 state
The data are based on 106m3 measured at SC of methane burned. What is the approximate mole fraction of SO2, NO2, and CO (on a dry basis) for each class of combustion equipment
potassium nitrate has a lattice energy of -163.8 kcalmol and a heat of hydration of -155.5 kcalmol. how much potassium
Give the full electron configuration (# electrons, quantum numbers for last electron added, orbital diagram, electron configuration) for each of the following
The energy required to dissociate the H2 molecule to H atoms is 432 KJ/mol H2. If the dissociation of an H2 molecule were accomplished by the absorption of a single photon whose energy was exactly the quantity required , that would be its wavelend..
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