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A) The (H+) in a solution is 6.8 x 10-3 M. What is the pH?
B) The pH of a solution is 3.70. What is the (H+)? What are (OH-) and pOH?
C) The Ka for Hypochlorus acid, HCIO, is 7.2 x 10-4 at 25 oC. What is pKa? Write the equation for the reaction to which Ka applies.
Compute the atomic mass of 109Ag if natural abundance of 107Ag is 51.87% & atomic mass =106.905 amu and determine the probability of particle would be located in the range
calculate the equilibrium constant from an absorbance value but my professor never told us how to calculate this.
Calculate the values of Avogadro's number and the Faraday assuming the charge in an electron is 1.602 x 10^-19 coulombs/electron. Also calculate the mass the magnesium anode have lost during the process.
A chemist needs to determine the concentration of a solution of nitric acid, HNO_3. She puts 865 mL of the acid in a flask along with a few drops of indicator.
The partial pressure of O2 in air at sea level is 0.21 atm. Using Henry's law, calculate the molar concentration of O2 in the surface water of a mountain lake saturated with air at 20C and an atmosphere pressure of 650 torr.
A ten L Dewar containing liquid nitrogen tips over in your car while you are transporting it. If it completely vaporizes what volume of Nitrogen gas will be produced at 1 atm and 20 degrees C
iron pyrite fes2 is the form in which much of the sulfur exists in coal. in the combustion ofcoal oxygen reacts with
a 1.20 gram sample of dry ice is added to a 755ml flask containing nitrogen gas at a temperature of 25.0 degrees
what is the enthalpy change for a reaction where the internal energy change is 58.0 kJ and the volume increase is 12.6 L? (1L * atm = 101.325 J)
Is the energy that an electron has in the first energy level of atom A the same as the energy that an electron would have in the first energy level of aom B
if it takes 1656 kj/mol to break all bonds in methane, what is the bond empathy of one C-H bond?
Explore the effects of acid rain pre and post the 1990 Clean Air Act. Pair up and choose one of the topics listed below. One person should research and report on the damage that was being observed due to acid rain prior to 1990.
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