How much Fe++ could be present in water containing 1.2 x 1e-02 M HCO3- (bicarbonate) without causing the precipitation of FeCO3 (Ksp=10**(-10.7)) Hint: carbonate equation.
Im confused on how to do this problem all together. I can't find help in the book because their answers are hard to follow. If you could work this out and explain how each step was done so I could understand how to do it that would be awesome. Thank you Given that the average TEQ of animal-based foods is about 0.7 picograms o ...continues
How many oxygen atoms are indicated in one formula unit of each of the following?
Please help with the following problems. 1. How many oxygen atoms are indicated in one formula unit of each of the following? a. Al2(C2O4)3 b. Ca3(PO4)2 c. Zn3(PO4)2 d. Al2(SO4)³ 2. How many atoms of each kind (N, P, H and O) does the notation 6(NH4)2HPO4 indicate? 3. Which of the following equati ...continues
Toxicity of TCDD in Animal Based Foods
Given that the average TEQ of animal-based foods is about 0.7 picograms of TCDD equivalent per gram, and that the LD50 for 2,3,7,8-TCDD is about 0.001 mg/kg body weight, what mass(kg) of animal-based food would you have to consume to ingest a fatal dose of it?
Could you please explain what formula and step are involved and please provide (example) problem if possible: A 40.0 mL sample of river water was titrated with 0.0010 M Na2Cr2O7 and required 8.3 mL to reach the end-point. What is the chemical oxygen demand, in milligrams of O2 per liter, of the sample?
Steady State Radon Concentration in Basement of House
Radioactive radon gas (222Rn) enters an average building at a rate of 4 picocuries per second per square meter of foundation area. Consider a house with a foundation of 200 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 only one t ...continues
a)Assume a wind turbine with a hub 50 meters above the ground, a rotor diameter of 75 meters and a wind-conversion efficiency of 25 percent. The turbine operates in an area with an average wind-power density of 650 watts/sq meter at 50 meters altitude. How much electricity (kwH) can the turbine generate per year? b) Wind de ...continues
What technology or combination of technologies would you recommend for treating Sulfur dioxide contaminated air streams? Could you include a brief description of the recommended technology so I can understand:
Work, Power and Enerhgy: Wind Turbines
Could you please explain what formula and step are involved and please provide (example) problem if possible? a)Assume a wind turbine with a hub 50 meters above the ground, a rotor diameter of 75 meters and a wind-conversion efficiency of 25 percent. The turbine operates in an area with an average wind-power density of 650 wa ...continues
What technology or combination of technologies would you recommend for treating the following contaminated air streams? Include a brief description of the recommended technology: (a) 0.05 to 20 micron particulates along with 800 ppmv of chlorinated solvent
