What elements are paramagnetic in the second row of the periodic table?
The Ksp for Fe(OH)3 is 4 x 10-38. What is the maximum concentration of Fe+3 in neutral (pH=7) water? The solubility of NaCl is 35.7 grams per 100mL at 20°C. What is the Ksp for NaCl?
The following is best described by which type of reaction? HCl + NaOH --> NaCl = H2O A. decomposition B. acid-base neutralization C. single displacement D.redox E. double displacement (metathetical)
Draw Lewis Structure for CaO
Lewis structure for potassium bromide?
What is the VSEPR notation of the following: A. COCl2 B. ClO2- C. PH3
Precipitation of inorganic (metals) in a water treatment system?
Please help and explain to me clearly......a wastewater contains various cations such as Na, K, Mg, Ca, Ba, Fe, Cu, Zn, and Al; the pH of the wastewater is approx. 6.0 To that wastewater is added H3PO4 (phosphoric acid) in an approximate dose of .00034 gals of H3PO4 per gallon of wastewater. I'm less concerned about the st ...continues
Calculate how much energy a wind turbine produces in a year.
Assume a wind turbine with a hub 50 meters above the ground, a rotor diameter of 40 meters and a wind-conversion efficiency of 25 percent. The turbine operates in an area with an average wind-power density of 550 watts/sq meter at 50 meters altitude. How much electricity (kwH) can the turbine generate per year? Wind densities ...continues
I have an environmental chemistry course in which we are currently studying the environmental and health impacts of wood preservatives such as cresol, pentachlorophenol, and chromated copper arsenate. Question 1: For the 3 wood preservatives noted, would acidic vs. alkaline soil or water conditions cause more (or less) lea ...continues
Concentration of Lead in Soil from Mine Tailings
Lead from mine tailings containing 0.6 % lead was applied at a rate of 12 metric tons per acre of soil and worked in to a depth of 20 cm. The density of the soil is 1.8 g/cm3. To what extent does this add to the burden of lead in the soil? (There are 640 acres per square mile and 1609 meters in a mile.) a) 19 ppb b) 45 ppb ...continues
