#3 Rank the following in terms of how simple they are to obtain. Order the items from the mostsimple, to the most complex/time consuming. Which is most meaningful for environmentalengineers and why?CODThoD. BOD●The following test results were obtained for a wastewater sample take at an industrial facility. Allthe tests were performed using a sample size of 0.2 L. Determine the total solids, total volatilesolids, total fixed solids, total suspended solids, volatile suspended solids, and fixed suspendedsolids concentrations in mg/L.Tare mass of Whatman GF/C filter = 1.5258 gMass of Whatman GF/C filter plus reside after drying at 105°C = 1.5592 gMass of Whatman GF/C filter plus residue after ignition at 550°C = 1.5411 gTare mass of evaporation dish = 52.6289 gMass of evaporating dish plus residue after evaporation at 105°C = 52.7053 gMass of evaporating dish plus residue after ignition at 550°C = 52.6699 gBalance the following reaction, show all work and changes in oxidation states (Fe and N only).Iron reduction (Fe2+ to Fe(OH)) with nitrite (NO₂) oxidation to nitrate (NO3)Find the theoretical oxygen demand for the 30 mg/L of methanol (CH³OH). The products of thereactions are CO2 and H₂O:

Given:- Imbalanced reaction : Iron reduction () with nitrite oxidation to nitrate…

Answered: Balance the following reaction, show…

Balance the following reaction, show all work and changes in oxidation states (Fe and N only). Iron reduction (Fe2+ to Fe(OH)) with nitrite (NO₂) oxidation to nitrate (NO3) ●

Chemistry

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ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

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Question

Rank the following in terms of how simple they are to obtain. Order the items from the most
simple, to the most complex/time consuming. Which is most meaningful for environmental
engineers and why?
COD
ThoD
. BOD
●
The following test results were obtained for a wastewater sample take at an industrial facility. All
the tests were performed using a sample size of 0.2 L. Determine the total solids, total volatile
solids, total fixed solids, total suspended solids, volatile suspended solids, and fixed suspended
solids concentrations in mg/L.
Tare mass of Whatman GF/C filter = 1.5258 g
Mass of Whatman GF/C filter plus reside after drying at 105°C = 1.5592 g
Mass of Whatman GF/C filter plus residue after ignition at 550°C = 1.5411 g
Tare mass of evaporation dish = 52.6289 g
Mass of evaporating dish plus residue after evaporation at 105°C = 52.7053 g
Mass of evaporating dish plus residue after ignition at 550°C = 52.6699 g
Balance the following reaction, show all work and changes in oxidation states (Fe and N only).
Iron reduction (Fe2+ to Fe(OH)) with nitrite (NO₂) oxidation to nitrate (NO3)
Find the theoretical oxygen demand for the 30 mg/L of methanol (CH³OH). The products of the
reactions are CO2 and H₂O:

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