Chemistry Homework Solutions

Removal of Organic Carbon from Sewage Water

Describe the two ways organic carbon is removed from sewage water, and give the balanced equations for aerobic and anaerobic degradation of biomass.

Alternatives to Chlorine Gas as a Wastewater Effluent Disinfectant

What is the objection to using chlorine gas to disinfect wastewater effluent, and suggest two alternative substances that can be used without causing this problem.

Predicting the Products of Reactions from Nitrofying (Nitrosomonas) and Denitrofying Bacteria

Please see the attached file for the fully formatted problems.

How would you expect pE to vary in a stratified lake and why?

How would you expect pE to vary in a stratified lake and why?

Leachate Circulation in Landfills

Why should we be concerned about leachate circulation in a municipal waste landfill?

Environmental Degradation of Organic Compounds

Predict the relative ease of degradation of four water pollutants based on structure and stability Please see the attached file for the fully formatted problems.

Predicting the Products from Organic Reactions

Please see the attached file for the fully formatted problems. Catechol + O2 ---> 2-pentanol (- H2)--->

Interpreting pE/pH Diagrams

Use the pE / pH diagram shown below to answer the following questions. What is the predominant form of cobalt at a pE of 7.0 and a pH of 4.0? at a pE of 7.0 and a pH of 10.0? at a pE of 2.0 and a pH of 9.0? at a pE of -3.5 and a pH of 5.5? List the forms of cobalt that would be transported in water?

Lead Solubility

Please provide solution for (a) and (b) with explanation of how it was derived. Early groups used Pb plumbing in their homes more than 2000 years ago. This Pb pipe has since corroded in the soil to form cerrusite (PbCO3) and hydrocerrusite ( Pb3(CO3)2(OH)2 ). Essington et al., 2004. The soil mineralogy of lead at Ho ...continues

Average number of air molecules per cubic centimeter of air at a given altitude ...

At an altitude of 40.00 km, the average atmospheric temperature is essentially 0 degrees C. What is the average number of air molecules per cubic centimeter of air at this altitude? Hint: Solve the equation for the pressure as a function of height and temperature and from this use the ideal gas equation to calculate the volume ...continues

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