Soda ash is - Study guides, Class notes & Summaries

ENL1501 Assignment 1 Semester 1 2024 (Solutions) Question 1 Answer saved Marked out of 1.00 Flag question Question text How can packaging support the environment? a. By providing clear environmental information b. By using excessive materials c. By making products more expensive d. By being visually unappealing Clear my choice Question 2 Answer saved Marked out of 1.00 Flag question Question text What is the primary role of air for bioresources? a. Providing structural s...

When pressure testing a new line, how much pressure do you add? - 1.5 times normal pressure, up to 150 pounds, whichever is greater What would cause a repeat Bac-T sample? - Incomplete form, not enough sample, silt or slime in the bottle, positive e-coli, all of the above What are the layers of stratification? - Upper layer - Epilimnion. Middle layer - Thermocline. Bottom Layer - Hypolimnion. What standard must bleach meet? - NSF (National Sanitation Foundation) What is the Solid con...

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 correct answer: 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 structures inside c. By breaking bonds and poisoning...

How much clearance from the top of the boiler is needed for a HP boiler that produces 70000 lbs of steam? - Answer- 7 feet On a gas fired boiler what is the proper gas to air mixture - Answer- 30%-70% and in special arrangements it can be as high as 100% . ANSWER CHAPTER 11 remember% What is the total hardness in a system that was found to have calcium hardness of 60ppm and magnesium hardness of 18ppm and carbon hardness of 12 ppm? - Answer- TH=(Ca x 2.5) + (Mg x 4.1)nTH=(60 x 2.5) + (18...

REHS Questions with All Correct Answers What would you expect from a swimming pool with a high pH reading? - Answer-Cloudiness and eye irritation Which will raise the pH of a pool? a. Calcium Bicarbonate b. Calcium Carbonate c. Soda Ash or Caustic Soda - Answer-Soda Ash or Caustic Soda Soda ash is - Answer-Sodium Carbonate NaCO3 Caustic Soda is - Answer-NaOH Which chemical is used to oxygenate swimming pool water? a. Ozone b. Sodium Carbonate c. Sodium Bicarbonate d. Cal...

Pool Operator's Final Exam questions & answers 2023The percentage of hypoclorous acid formation is most influenced by: pH Pool painting is usually done: Before opening in the spring 00:10 01:20 When a pool is chlorinated with gas chlorine, the operator must also use: Soda Ash The term "chlorine demand" refers to: The amount of chlorine which will react with substances in the pool Re-circulation pumps used in swimming pools are the type called: Centri...

Which disinfectant would work best against cryptosporidium ozone dichloramine hypochlorite ion hypochlorous ion ozone The pH of a water sample is greater than the pHs, so the Langelier index? indicates the water is corrosive is negative indicates the water is scale forming indicates the water is stable indicates the water is scale forming When water high in calcium bicarbonate is softened by ion exchange all cations and anions are removed regeneration is usually accomplished by an ...

The percentage of hypochlorous acid formation is most influenced by: (Ans- pH Pool painting is usually done: (Ans- Before opening in the spring When a pool is chlorinated with gas chlorine, the operator must also use: (Ans- Soda Ash The term "chlorine demand" refers to: (Ans- The amount of chlorine which will react with substances in the pool Re-circulation pumps

what would you expect from a swimming pool with a high pH reading? cloudiness and irritation to the eyes Which will raise pH in a pool? Soda ash (sodium carbonate) or Caustic Soda (NaOH) Which chemical is used to oxygenate swimming pool water? sodium carbonate how would a swimmer most likely contract legionella pneumopila from a pool? inhalation of pool water vapor swimming pool water clarity is measured in NTUs, it is recommended that a level of 0.5 NTU... shall not be exceeded

The percentage of hypochlorous acid formation is most influenced by: (Ans- pH Pool painting is usually done: (Ans- Before opening in the spring When a pool is chlorinated with gas chlorine, the operator must also use: (Ans- Soda Ash The term "chlorine demand" refers to: (Ans- The amount of chlorine which will react with substances in the pool Re-circulation pumps used in swimming pools are the type called: (Ans- Centrifugal pumps Reversing the flow of water through the fil...