sodium EDTA as the chelating agent to form complexes with the metal impurities in the solutions calcium carbonate and unknown sample. Complexes will form from sodium EDTA reacting with impurities because each element from disodium EDTA carboxylic acid groups will donate an electron pair to the metal impurities ion center. ammonia/ammonium chloride buffer used in today’s lab will reassure calcium metal ions and metal ions in unknown water sample remain in solution being determined for accurate
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buffer against short periods of drought or to allow water supply to be maintained during transitory pollution incidents in the source river. 4. Pre-conditioning – Water rich in hardness salts is treated with soda-ash (sodium carbonate) to precipitate calcium carbonate out utilising the common-ion effect. 5. Pre-chlorination – In many plants the incoming water was chlorinated to minimise the growth of fouling organisms on the pipe-work and tanks. Because of the potential adverse quality effects
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below this number is categorized as acidic and urine with a higher pH is alkaline. pH is playing a important role in the development of renal calculi. Acidic urine will lead to xanthine‚ cystine uric acid‚ and calcium oxalate stones. However alkaline urine can cause calcium carbonate‚ calcium phosphate‚ and magnesium phosphate stones. For protein‚ normally there will be no protein or only small amount of protein in the urine‚ Protein in the urine may be a sign of kidney disease. If the result finds
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hydrochloric acid‚ HCl • 0.1 M ethanoic acid (acetic acid)‚ CH3COOH • 0.1 M sodium hydroxide‚ NaOH • 1 M hydrochloric acid‚ HCl • 1 M ethanoic acid (acetic acid)‚ CH3COOH • universal indicator solution • limewater (calcium hydroxide‚ Ca(OH)2) Marble chips (calcium carbonate‚ CaCO3) Copper(II) oxide‚ CuO Small pieces of magnesium‚ Mg Measuring cylinder 10 clean‚ dry test tubes Test tube rack Two spatulas Plastic forceps Dropping pipette 2 × 100 mL conical flask One-holed rubber stopper with bent
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Chapter 47: Nursing Management: Acute Kidney Injury and Chronic Kidney Disease Test Bank MULTIPLE CHOICE 1. After the insertion of an arteriovenous graft (AVG) in the right forearm‚ a 54-year-old patient complains of pain and coldness of the right fingers. Which action should the nurse take? a. Teach the patient about normal AVG function. b. Remind the patient to take a daily low-dose aspirin tablet. c. Report the patient’s symptoms to the health care provider. d. Elevate the patient’s arm on pillows
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Final Project: Metabolism Support Supplement For Women Tracy A. Richards Kaplan University HW205: Vitamins‚ Herbs and Nutritional Supplements Metabolism Support Supplement For Women During the past 20 years‚ there has been a dramatic increase in obesity in the United States and rates remain high. Obesity-related conditions include heart disease‚ stroke‚ type 2 diabetes and certain types of cancer‚ some of the leading causes of preventable death. James O. Hill‚ PhD‚ director of the
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Find the molar mass of the following compounds: Show work and include units 1. CO2 2. 3. 4. 5. Fe2O3 6. 7. 8. 9. AgCl 10. 11. 12. 13. Ca3(PO4)2 14. 15. 16. 17. W3(PO3)5 18. 19. 20. 21. Fe(C2H3O2)2 22. 23. 24. 25. Calcium Carbonate 26. 27. 28. 29. Lead IV Sulfate 30. Lead IV Sulfite 31. 32. 33. 34. Lead IV Sulfide 35. 36. 37. 38. Lead II sulfate 39. 40. 41. 42. Lead II Sulfite 43. 44. 45. 46. Lead II Sulfide 47. 48. 49. 50. Copper I Sulfide 51. 52. 53
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General Study Guide: Test 1 Garrison 8th Edition Go over all powerpoint slides and concepts discussed. Chapter 1 Origins 1. Ages: Universe‚ Earth‚ Ocean 2. Scientific method 3. Big Bang Theory – universe is expanding - two major sources of evidence 4. Hubble’s Law 5. What is a light year and why do we use it to measure distance in the universe? 6. What are 3 major processes that formed the solar system and planets? 7. What is most abundant element in solar nebulae? 8. What are
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Introduction We are going to do an experiment to see how surface area effects the rate of reaction when added to hydrochloric acid. I will add calcium carbonate (marble chips) to hydrochloric acid. When calcium carbonate is added to hydrochloric acid a reaction takes place. The solution fizzes and gives off the gas carbon dioxide. I will collect this gas in a gas syringe and will time how long it takes for the reaction to produce 100cm3 of carbon dioxide. CaCO3 +2HCL Co2 +CaCl2 +H2O CalciumHydrochloricCarbonCalciumWater
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Elements‚ Mixtures and Compounds An element is a pure substance made of one type of particle (atom). Particles can join up with other particles of the same type to form molecules. Examples: Hydrogen = H2 . This means there are two atoms of hydrogen joined together to form a molecule of hydrogen gas. Oxygen = O2‚ Nitrogen is H2‚ Chlorine is Cl2. A compound is a pure substance of two or more elements chemically combined together in a set ratio. Example: Water = H20 this means there are always
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