Hardness lab - Study guides, Class notes & Summaries

Chem Lab- Science Olympiad Questions and Answers Rated A+ What is the formula for Molarity? moles of solute/liters of solution What is an acid? An acid is a source of hydrogen ions, H+, has a pH less than 7 Strong bases (usually salts), NaOH, KOH, Ca(OH)2, Mg(OH)2 What are physical properties? characteristics of a substance that can be observed without changing it into another substance What are examples of physical properties viscosity, conductivity, malleability, hardness, ...

Simulants Assignment 18 Test Questions and Answers Some diamond simulants display "see-through" because compared to diamond, they, A. display less fire. B. have lower hardness. C. can't be polished as well. D. have much larger critical angles. - Answer-D Which of the following typically has a waxy to granular girdle surface? A. CZ B. GGG C. Diamond D. Synthetic rutile - Answer-C The term "diamond simulant" .... A. includes only manmade stones. B. means the same a...

Explain the different performances of CSTR and PFR for hardness removal using cation exchange resins and what are the causes? - correct answer PFR and CSTR have similar efficiencies when amount of resins are small. At high amounts of resins PFR performs better because PFR has small short circuit and higher/longer contact time. We add buffer before or after adding indicator? What is the buffer for? - correct answer Before and its to maintain the reaction rate. State two errors ...

Practice Certification Exam for Water Treatment operation Actual exam Investigate immediately. If a consumer complains about the drinking water characteristics, the operator should record the complaint and Operating ratio What term is used when a water utility divides its total operating expenses into the total revenue? Daily How often should operating data, such as flow rate, amount of water treated, dosage of chemical, and reservoir levels be recorded? Document that safe dri...

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

In Injection Molding, where do we add more material to the machine? - correct answer-Hopper What is the preferred drill size for a ½-14 NPT Pipe thread? - correct answer-23/32" In Cold Rolling, what is the initial width of the aluminum strips? - correct answer-0.7" In Dynamometer Lab, the minimum feed rate to be set is? - correct answer-0.002 in/rev If the floor around your machine is oily, what should you do? - correct answer-Protect other by cleaning up the spills immediately ...

Davita PCT Final Exam Questions And Answers with Complete Solutions Arterial pressure high alarm causes? - answerSeperation of tubing How do you know numbing has taken effect? - answerBlanching of the skin What germ causes the most infections in hemodialysis patients? - answerMRSA True or false: Squeezing the BP cuff can damage the machine - answerTrue What are possible consequences of poor or incomplete documentation? - answerAttack on your care Chlorine in the water used for hemodialys...

1. Celiac Disease a. Lining of the small intestine, intolerant of gluten. (avoid BROW) Barley, Rye, Oat, Wheat i. More pronounced in the duodenum and jejunum. b. Signs and Symptoms - abdominal pain/distention; diarrhea (pale, greasy, bulky, foul) i. Malnutrition complications - rickets, occult blood, anemia (early bleeds and/or bruises) ii. Hypomagnesemia and hypocalcemia = Irritability, tremors, convulsions, tetany, bone pain, osteomalacia c. Lab Value: IgA-tTg, total IgA, IgA-EMA, HLA-D...

GIA Diamond Essentials Exam Questions and Answers with Complete Solutions chemical element - answerconsists of only one kind of atom mineral - answerinorganic. most minerals are a combo of 2 or more elements diamonds form - answerwithin 90-120 miles below earth's surface value factos - answerfeatures used to judge the quality and value of stones - a diamonds value is based on its combo of the Four C's inclusions - answerclarity characteristic totally enclosed in a polished gemstone or ...

GIA Diamond Essentials Exam With 100% Correct Answers 2024 chemical element - answerconsists of only one kind of atom mineral - answerinorganic. most minerals are a combo of 2 or more elements diamonds form - answerwithin 90-120 miles below earth's surface value factos - answerfeatures used to judge the quality and value of stones - a diamonds value is based on its combo of the Four C's inclusions - answerclarity characteristic totally enclosed in a polished gemstone or extending into ...