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A 0.10 M solution of NaY has a pH of 11.50. Calculate the ionization constant of HY.
Calculate the pH of a 0.32M NH4Cl solution. K for NH3= 1.8E-5
Disscuss by IR spectrum and NMR. On my spectrum, it showed up 3282.57, 16557.91 and 16003.22. What are those wavelength are stand for
When NH3 is prepared from 28 g N2 and excess H2, the theoretical yield of NH3 is 34 g. When this reaction is carried out in a given experiment, only 30. g is produced. What is the percentage yield
Radioactive materials are often used in biological studies. A radiation biologist studies the rate of decomposition of a certain substance and obtains the following data:
A 1.30 M solution of citric acid (H3C6H5O7) in water has a density of 1.10 g/cm3. Calculate the mass percent, molality, mole fraction, and normality of the citric acid. Citric acid has three acidic protons.
Compute the average kinetic and potential energies of an electronic the ground state of a hydrogen atom.
Ten pounds of ethane are added as well as the specific gravity of the gas mixture is measured to be 1.68. Presume that the gases acts as ideal gases. Explain what was the gas originally in the tank
what is the expected boiling point of a solution that contains 25.0g of glucose c6h12o6 in 250.0 g of h2o? kbp 0.51
calculate the equilibrium pressure of N2O4(g) and NO2(g). (c) What percentage (by moles) of the original N2O4(g) is dissociated at the new equilibrium position (total pressure = 1.00 atm)?
The flask shown here contains 0.214 g of acid and a few drops of phenolphthalein indicator dissolved in water. The buret contains 0.310 M NaOH. What volume of base is needed to reach the end point of the titration
A 31.43 ml volume of .108M NaOH is require to reach the phenolphthalein endpoint in the titration of a 4.441g sample of vinegar. Calcute the percent acetic acid in the vinegar.
In an electron microscope, electrons are accelerated to great velocities. Calculate the wavelength of an electron traveling with a velocity of 7.0 × 103 kilometers per second. The mass of an electron is 9.1 × 10-28 g.
125 mole of oxygen gas is added to carbon in a .25L container. The mixture equilibriates at 500K. Calculate the equilibrium concentration of carbon monoxide, knowing that K=.086 at 500K. C(s) + O2(g) ----> 2CO(g)
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