What are the primary factors that determine the rate of acid generation in the process known as acid mine drainage?
What are the primary factors that determine the rate of acid generation in the process known as acid mine drainage?
What are the causes of acid precipitation and acid mine drainage? Write down the important chemical reactions involved in these two problems with some brief explanations. Discuss the similarities and differences of the environmental damages caused by acid precipitation and acid mine drainage.
The Gold King Mine spill released 9.3 acre feet of Acid Mine Drainage (AMD) and an estimated 400 kg of Copper. 1 acre-foot = 1233 m3 Colorado Department of Public Health and the Environment (CDPHE) allowable concentration for dissolved copper Cu+2 = 50 µg/L Using these simple assumptions, did the dissolved copper concentration exceed the CDPHE standard for dissolved Copper?
With at least two reasons, explain how “acid mine drainage” can pollute the environment. please help!
2. A water sample is taken from a stream in Nevada receiving acid mine drainage. The stream passes through an area containing gypsum CaSO4. Laboratory analysis shows that the pH of the water is 4, the total concentration of sulfate (SO42-) is 6 x 10-M, and the total concentration of chloride (C1) is 3 x 10-4M. a) Assuming that the only other ionic species present is calcium (Ca?), what is the calcium concentration in the water?
4. Some treatment techniques for acid mine drainage rely on the use of sulfate-reducing bacteria to convert sulfuric acid to H2S in order to reduce corrosivity. Sulfate-reducing bacteria obtain energy by the following reaction: 7H+ + CH3C00- + S0 + 2H2CO3(aq) + H2Saq + 2H20 a. (10 points) Calculate the standard free energy change for the reaction as written b. (8 points) Calculate the equilibrium constant at 25°C for the reaction as written
4) A 15 cm wall is known to have an internal heat generation rate of 1.7.10 . The wall is insulated on its inner surface and exposed to air with properties of To-88℃ and ho 490 W/m2K on its outer surface. The maximum temperature of the wall is found to be equal to 270 °C. a. b. c. Draw the resistance circuit. Determine the thermal conductivity of the wall. Determine the heat flux leaving the wall. enovo
For ion transport across a cell membrane what two, sometimes competing factors determine whether the process is spontaneous? Use words not equations. and
Q)What is depreciation: a. Allocation of a cost to its use in revenue generation b. Rate at which an investment is made. c. Increase or decrease in the market value of an asset Q) EBIT is also known as: a. Gross Profit b. Gross Margin c. Net Profit d. NOPAT e. Operating Profit
according to Fermi's golden rule what factors determine the rate of and electric dipole allowed transition?
What are the primary differences between a thread and a process?