need distance given constant rate of leakage?
A certain pesticide is fatal to fish fingerlings at a level of 0.5 parts per million in water. A leaking metal can containing 2.0 kg of the pesticide was dumped into a stream with a flow of 10.0 Liters per second moving at 1.9 km/hr. The container leaks pesticide at a constant rate of 5.0 mg/sec. For what distance (in km) downst ...continues
Henry's Law, need rxn rate of diff measurements given volume
Consider the following aqueous route to oxidize SO2: SO2(aq) + H2O2(aq) -> H2SO4(aq) k = 1.1 X 10^3 L/mols a. The partial pressure and Henry's law constants for SO2 and H2O2 are 2.7 ppm (KH = 1.2 mol L-1atm-1) and 4.9 ppb (KH = 1.0E5 mol L-1atm-1), respectively. Calculate the reaction rate of this process. b. Calculate the re ...continues
given Eh and pH, calculate dissolved oxygen in ppm
A ground water sample , at 25 C, has Eh= 0.6 and pH=6.40. Assuming the system is at equilibrium, calculate the amount of dissolved oxygen (ppm) in the groundwater sample. Hint: [O2-aq]/[O2-g]=0.0012589
mainly comparing chemicals/compounds properties (See attached file for full problem description)
concentration of Fe2+ in equilibrium with Fe(OH)3
At pH 6.00 and pE 2.60, what is the concentration of Fe2+ (mol/L) in equilibrium with Fe(OH)3? Use the Nernst equation and the Ksp for the solubility of solid iron (III) hydroxide.
How much electricity can a turbine generate in one year?
Assume a wind turbine with a hub 50 meters above the ground, a rotor diameter of 50 meters and a wind-conversion efficiency of 25 percent. The turbine operates in an area with an average wind-power density of 500 watts/sq meter at 50 meters altitude. How much electricity (kwH) can the turbine generate per year? Wind densities g ...continues
Average steady state concentration of 222Rn in a house
Radioactive radon gas (222Rn) enters an average building at a rate of 4.5 picocuries per second per square meter of foundation area. Consider a house with a foundation of 500 square meters and a volume of 1000 cubic meters. Assume the house if well designed for energy conservation so that the ventilation rate is low and ...continues
amount of dissolved oxygen in groundwater sample
A ground water sample , at 25 C, has Eh= 0.2 and pH=5.40. Assuming the system is at equilibrium, calculate the amount of dissolved oxygen (ppm) in the groundwater sample. [O2-aq]/[O2-g]=0.0012589
Finding partial pressure in atm with given pH and iron concentrations
What is the calculated value of the partial pressure(atm) of O2 in acid mine water of pH 2.200, in which [Fe3+] = [Fe2+]?
Electricity: Power Generation by Wind Turbine.
Assume a wind turbine with a hub 50 meters above the ground, a rotor diameter of 65 meters and a wind-conversion efficiency of 25 percent. The turbine operates in an area with an average wind-power density of 300 watts/sq meter at 50 meters altitude. How much electricity (kwH) can the turbine generate per year?Wind densities gre ...continues
