Hardness in water - Study guides, Class notes & Summaries

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...

MD Stationary Engineer Practice Questions and Answers Latest Updated 2024/2025 (100% Correct) Gases of Combustion that cool on Contact with the boiler heating Surface before combushion is completed Cause a(n) _________ - Answer Formation of soot and smoke In the event of a flame failure, the programmer will______ - Answer Secure the fuel, purge the firebox, and then shut down Boil the water must be conditioned to prevent ______ (3 Answers) - Answer Formation of scale, oxygen pitting, carry...

12 Reasons why the health inspector will close your pool - ANSWER 1. pump filter not working for more than an hour 2. main drain is not visible 3. chemical readings out of range 4. no pool operator (15 minute grace period) 5. no lifeguard or cpr certs present 6. water is below the skimmer line 7. danger to the public 8. chlorinator is not working 9. health inspector is not allowed in 10. bathrooms + drains not working 11. flow rate is too low 12. no phone (landline) Measuring reco...

Water Distribution Test 2 Questions and Answer What does a C value of 140 means for a pipe? - ANSWER The pipe interior is very smooth. Which primary contaminant causes Blue Baby Syndrome? - ANSWER Nitrate. What is a nutating disc? - ANSWER Type of a water meter for a small-diameter domestic service. What causes hardness in water? - ANSWER Magnesium and calcium. Which of the following is a confined aquifer with groundwater under positive pressure? - ANSWER Artesian. ____________ i...

TCEQ Surface Water B License Pt. 3 Question and answers 2024 verified to passWhat causes carbonate hardness? - correct answer Magnesium Bicarbonate What are the detention times for setting basins? - correct answer 6 hours for normal, 4.5 for Softening What type of reaction is coagulation? - correct answer Chemical and physical What does the reaction of Alum or iron compounds with natural alkalinity in water form? - correct answer Insoluble Hydroxide (Floc) What is the maximum num...

Chapter 01: Introduction to Dental Materials MULTIPLE CHOICE 1. Until 1970, which of the following groups of dental auxiliaries were allowed to perform intraoral functions in all states? 1. Dental hygienists 2. Registered dental assistants 3. Certified dental assistants 4. On-the-job trained dental assistants a. 1, 2, 3, 4 b. 1, 2, 3 c. 1, 2 d. 1 ANS: D Until 1970, only the dental hygienist was allowed to perform intraoral functions in all states. Although laws vary ...

How much clearance from the top of the boiler is needed for a HP boiler that produces 70000 lbs of steam? correct answer: 7 feet On a gas fired boiler what is the proper gas to air mixture correct 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? correct answer: TH=(Ca x 2.5) + (Mg x 4.1)...

Ammonia mixed with chlorine gas creates a - ANSWER-white smoke The most difficult part of a water distribution operator's job. - ANSWER-furnish a continuous supply Physical connection between a safe and potentially unsafe water source. - ANSWER-cross connection A distribution system is a - ANSWER-looped system Dead end mains should be flushed - ANSWER-every month Excess nitrate causes a condition called - ANSWER-blue baby syndrome Water hardness is caused by - ANSWER-calcium a...

Clinical Annual Competency Exam - Fresenius (Complete Answered 2022/2023 guide) - The adequacy of a dialysis treatment may be compromised by - Routine post dialysis treatment documentation on the patients dialysis treatment record should include patients blood pressure and temperature both - Individual acid containers should be labeled with - The patient complains of pain at the catheter exit site. What would the PCT do first? - Which of these findings noted on a safety check woul...

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