Sulfate ion - Study guides, Class notes & Summaries
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REHS Exam Questions and Answers Already Graded A
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REHS Exam Questions and Answers Already Graded A 
Which of the following organisms are most resistant to unfavorable environmental conditions and indicate past of possibly intermittent pollution? 
a. fecal streptococci 
b. eschericha coli 
c. aerobacter aerogenes d. clostridium sporulates clostridium sporulates 
The presence of which of the following is most easily identified by laboratory analysis in water contaminated by feces? 
a. shigella dysenteriae 
b. coliform 
c. entamoeba histolytica d....
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chem 1305 exam 1 TTU (Questions & Answers) Passed!!
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density formula - Answer-D=m/v 
Celcius to Kelvin - Answer-K=C+273 
Ideal Gas Law Equation - Answer-PV=nRT 
Filtration - Answer-a difference in phase (solids and liquids) or (liquid and gases) 
Distillation - Answer-A process that separates the substances in a solution based on their boiling 
points 
compound rule #1 - Answer-combines a metal and nonmetal 
1. Name the metal first 
2. Name the nonmetal second 
3. Add -ide suffix to the nonmetal 
compound rule #2 - Answer-combines 2 nonmetals 
1. ...
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Certified Crop Advisor Terms and Guidelines Final cert exam
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Certified Crop Advisor Terms and 
Guidelines Final cert exam 
Acid Soil: - CORRECT ANSWER-A soil that has a pH value of less than 7.0. 
Aerobic: - CORRECT ANSWER-A condition identified by the presence of oxygen. 
Agronomic Nutrient Rate: - CORRECT ANSWER-Agronomic Amount of nutrients 
required by a crop for an expected yield, after all soil, water, plant, and air credits are 
considered. 
Alkaline Soil: - CORRECT ANSWER-A soil that has a pH value greater than 7.0. 
Ammonium (NH4+): - CORRECT ...
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REHS Exam Questions with Complete Solutions | 2024
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REHS Exam Questions with Complete 
Solutions | 2024 
Which of the following organisms are most resistant to unfavorable environmental conditions 
and indicate past of possibly intermittent pollution? 
a. fecal streptococci 
b. eschericha coli 
c. aerobacter aerogenes 
d. clostridium sporulates - Answer️️ -clostridium sporulates 
The presence of which of the following is most easily identified by laboratory analysis in water 
contaminated by feces? 
a. shigella dysenteriae 
b. coliform 
c. en...
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REHS Practice Test Questions and Answers 100% Accurate
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REHS Practice Test Questions and Answers 100% Accurate 
Soil permeability procedure involves evaluating a soil core or test pit. What does the procedure yield? 
 
a. Permeability estimated seepage rate 
b. Permeability estimated application rate 
c. Permeability estimated range 
b. Permeability estimate 
 
 
 
How does chlorine kill microorganisms and bacteria? 
 
a. By weakening enzymes and destroying internal organelles 
b. By attacking lipids in cell walls and destroying enzymes and structure...
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ACS BIOCHEMISTRY EXAM Questions and Answers
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Henderson-Hasselbach Equation 
Ans- pH = pKa + log ([A-] / [HA]) 
Salting Out (Purification) 
Ans- Changes soluble protein to solid precipitate. Protein precipitates when 
the charges on the protein match the charges in the solution. 
Size-Exclusion Chromatography 
Ans- Separates sample based on size with smaller molecules eluting later. 
Ion-Exchange Chromatography 
Ans- Separates sample based on charge. CM attracts +, DEAE attracts -. May 
have repulsion effect on like charges. Salt or acid ...
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Water Treatment Exam Graded A+
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What is the purpose of adding Carbon Dioxide to Softened water? - ANSWER-Restores the Carbonate Balance. 
 
How is lime sludge dewatered? - ANSWER-By Solar Lagoons 
 
How can Non-Carbonate Hardness be achieved? - ANSWER-By Sodium Carbonate, Ion Exchange, Membrane Separation, Sodium Hydroxide. 
 
What is Selective Carbonate Removal? - ANSWER-Removal of Calcium Bicarbonate Hardness at PH of 9.6. 
 
Noncarbonate hardness present in water means? - ANSWER-The Total Hardness is greater than the Total ...
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ACS BIOCHEMISTRY EXAM QUESTION WITH COMPLETE SOLUTIONS LATEST 2023/2024
- Exam (elaborations) • 18 pages • 2023
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ACS BIOCHEMISTRY EXAM QUESTION WITH COMPLETE SOLUTIONS LATEST 2023/2024 
COMPLETE SOLUTIONS LATEST 2023/2024 Henderson-Hasselbach Equation - ANSWER pH = pKa + log ([A-] / [HA]) FMOC Chemical Synthesis - ANSWER Use d in synthesis of a growing amino acid chain to a polystyrene bead. FMOC is used as a protecting group on the N-terminus. Salting Out (Purification) - ANSWER Changes soluble protein to solid precipitate. Protein precipitates when the charges on the protein match the charges in the solu...
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ACS BIOCHEMISTRY EXAM Questions and Answers
- Exam (elaborations) • 42 pages • 2024
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Henderson-Hasselbach Equation 
Ans- pH = pKa + log ([A-] / [HA]) 
Salting Out (Purification) 
Ans- Changes soluble protein to solid precipitate. Protein precipitates when 
the charges on the protein match the charges in the solution. 
Size-Exclusion Chromatography 
Ans- Separates sample based on size with smaller molecules eluting later. 
Ion-Exchange Chromatography 
Ans- Separates sample based on charge. CM attracts +, DEAE attracts -. May 
have repulsion effect on like charges. Salt or acid ...
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IBWA CPO Exam 2024 with 100% correct answers
- Exam (elaborations) • 11 pages • 2024
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Particulate (mechanical) filtration, carbon filtration, reverse osmosis, demineralization (deionization & softening), distillation, mineral and fluoride addition, and disinfection and disinfection byproducts are all examples of ____________________ ______________________ processes Answer - water treatment 
 
Soluble iron is generally found in ground water with high _______________ ____________________ content Answer - carbon dioxide 
 
Soluble iron is changed to insoluble ferric iron by ______...
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