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A strain of bacteria has been isolated that can cometabolize tetrachloroethane (TCA). This strain of bacteria can be used for the bioremediation of hazardous-waste sites contaminated with TCA. Assume that the biodegradation rate is independent of TCA concentration (i.e., the reaction is zero order). In a bioreactor it is observed that the rate for TCA removal was 1 ?g/L-min. What water retention time would be required to reduce the concentration from 1 mg/L in the influent to 1 ?g/L in the effluent of a reactor? Assume the reactor is completely mixed.
reaction takes place in acidic solution, \rm H_2O{(l)} and \rm H^+{(aq)} will be involved in the reaction. Places for these species are indicated by the blanks in the following restatement of the equation
What would those concentrations be if you added HCl or NaOH to bring the pH to 3.2 or 7.35, respectively
. in the tin oxide laboratory activity what was the color of the vapor emitted when the nitric acid was added to the
Find the equilibrium concentrations of rm A and {rm B} for a = 1 and b = 2. Assume that the initial concentration of rm A is 1.0 {rm M} and that no {rm B} is present at the beginning of the reaction. kc=2.3
Choose the INCORRECT statement. a) When a half reaction is reversed, the sign of the potential is changed. b) reversing a half reaction makes it a reduction potential. c) each cell has a reduction half cell and an oxidation half cell.
A cylinder contains a mixture of hydrogen and chlorine molecules. Compare without doing any calculations
26.0 grams of an unknown sugar was dissolved in water and the final volume of the solution was brought up to 1.00 L. The osmotic pressure of this solution was determined to be 3.53 atm at 25°C. Which of the sugars below was most likely the unknown..
A balloon has a volume of 1.20 L at 24.0oC. The balloon is heated to 48.0oC. Calculate the new volume of the balloon.
the same volume ofco2 at the same temp. and pressure is liberated from 1.000g of dolomite byadding an excess of hcl as
A tank containing liquid butane and one containing liquid propane are sitting adjacent to one another. Each tank is equipped with a regulator with a pressure gauge
Determine the pH of an HF solution of each of the following concentrations: a) 4.60 x 10^-2 b) 2.30 x 10^-2
NH3 is a weak base (Kb = 1.8 × 10-5) and so the salt NH4Cl acts as a weak acid. What is the pH of a solution that is 0.080 M in NH4Cl
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