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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.
How much heat (in kJ) is evolved in converting 1.20 mol of steam at 134.0°C to ice at -55.0°C.
A sample of gas occupies 2.78 x 103 mL at 25oC and 760 mm Hg. What volume will the gas sample occupy at the same temperature and 475 mm Hg?
The human body is about 2/3 water. Sucrose is metabolized by the body. If the oxygen gas has a partial pressure of 162 Torr, what volume (at 37 degrees Celsius) is required for the metabolism reaction C_12_H_22_O_11 + O_2 > H_2_O + CO_2
what volume in milliliters of a 0.5 solution of copper ll sulfate cuso4 is needed to react with an excess of aluminum
Calculate the specific heat capacity of this sample of mercury if The amount of energy required to heat 2.00 grams Hg from 50 degrees C to 85 degrees C is 9.87 J.
If an aqueous solution has a hydronium ion concentration ([H3O+]) of 5.10 x 10-9 mol/L, what is the hydroxide ion concentration ([OH-]) in the solution
The vapor pressure of mercury is .0127 torr at 50 degrees celcius and .0888 torr at 80 degrees celcius. calculate the enthalpy of vaporization of mercury
The temperature of the calorimeter increased to 54.080C. Calculate the ?H for the reaction. You may assume the butter is pure glyceril tristearate (C57H110O6).
An automobile gasoline tank holds 22kg of gasoline. When the gasoline burns, 85kg of oxygen is consumed & carbon dioxide & water are produced? What is the total combined mass of carbon dioxide & water that is produced?
Which of the following is an experimental fact that valence bond theory cannot explain, but molecular orbital theory can? A) the paramagnetism observed for O2
Calculate the wavelengths of the following objects? c)a 83Kg athlete running exactly a 4 minute mile d)earth (mass=5.8x10^27g) moving through space at 2.8x10^4m/s
Use simple structure and bonding models to account for why xenon is capable of forming compounds like XeF4 while argon is not.
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