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An acid with the general formula RCOOH is utilized to make a 0.10 M solution in water. The pH of this acid solution is measured as 3.8. Compute the extent of dissociation of this acid in the prepared solution. The extent of dissociation is the fraction of the acid that is dissociated into the RCOO- anion and H3O+ cation in the aqueous solution.
How many moles of N2 molecules are present in a 0.151 L sample of dry air at 0.0356 atm and 23.8 °C ? (The mole fraction of N2 = moles of N2 / total moles of dry air = 0.7809.)
what is a given and how much water must be mixed with concentrated hydrochloric acid to prepare 50 cubic cm of 6 molar hydrochloric acid solution?
what chemical reaction could you perform to promote the aqueous solubility of hexyl amine? write an equation why is the
Then the potential of the mercury cathode was adjusted to -1.80 V vs. SCE, and the quantity of electricity passed during this second electrolysis was 64.17 cou- lombs. Calculate the weight percentages of CCl4 and CHCl3 in the original sample.
A H atom emitts a photon with a wavelength of 4.34 × 102 nm. If the energy of the initial state of the H atom was -8.72 × 10(-20) J, calculate the energy of the final state. Express answer in scientific notation.
a vertical cylinder contains v moles of an ideal gas and is closed offby a piston of mass m and area a. the
A radiation detector exposed to sunlight records the energy falling on a given area each unit time. If such a detector has a reading of .430 cal cm^-2 min^-1, how many photons of sunlight are striking each cm^2 in one minute? Assume the average wa..
Use Coulomb's law to calculate the ionization energy in kJ/mol of an atom composed of a proton and an electron separated by 150.00 pm.
The density of titanium metal is 4.51 g/cm3 at 25 °C. what mass of titanium displaces 125.0 ml of water at 25 °C. The density of benzene at 15 °C is 0.8787 g/mL. calculate the mass of 0.1500 L of benzene at this temperture.
The rate at which an Australian tree cricket chirps is 184 per minute at 35oC, but only 50 chirps per minute at 10oC. Assuming that cricket chirping follows the Arrhenius Law, what is the activation energy for the cricket chirping (in kJ/mol)? Ent..
Explain what experimental factors change the numerical value of n in the rate law for the reaction of H2O2 with I- Presume that the temperature is constant.
What is the concentration of a solution made from 15ml of 2.0M HBrO, 20.0ml of H20, and 9.7g HBrO (mm=97g/mol)
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