OCEAN ACIDIFICATION The world’s oceans have largely been left out of the mainstream discussion of global climate change. Yet‚ as one of the largest natural reservoirs of carbon‚ the surface ocean plays a critical role in the global carbon cycle. Over recent years‚ human activities such as the burning of fossil fuels have increased the amount of carbon dioxide gas emitted to the atmosphere and the amount that dissolves into the ocean. Over the last decade‚ scientists have discovered that this excess
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three ionic solid species Compound Formular Characterization Molecular Weight (g/mol) Calcium chloride CaCl2 Calcium chloride is an ionic salt‚ and metal halide. It is white crystalline solid at room temperature‚ with high solubility to water (Pubchem). CaCl2 used for this experiment were in beads form of approximately 10 mesh. 110.978 Sodium carbonate Na2CO3 Sodium carbonate is a sodium salt‚ and metal carbonate‚ that is water-soluble. It most commonly occurs as white hygroscopic powder (Pubchem)
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concentrations of CO2 • Therefore a pH of less than 5.6 has sometimes been used as a definition of acid rain The Effects: • increases the acidity of the soil‚ and affects the chemical balance of lakes and streams • accelerates weathering in carbonate rocks and accelerates building weathering • contributes to acidification of rivers‚ streams‚ and forest damage at high elevations • When the acid builds up in rivers and streams it can kill fish Problems: • large fraction of which are formed
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SEMESTER- I PRACTICAL- I VOLUMETRIC ANALYSIS The method to determine the exact amount of the substance in a given sample is termed as quantitative analysis volumetric analysis is a branch of quantitative analysis involving accurate measurement of volumes of reacting solutions. The volumetric analysis is very much in use due to simplicity rapidity accuracy and wide applicability. The reacting substances are taken in the form of solutions and made to react. The concentration of one solution is
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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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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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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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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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