receive a constant balance of fluids. Water from our bodies comes from foods and liquids. Water loss is mostly through urine and is also lost in sweat‚ respiratory tract and feces. The kidneys produce large amounts of urine when water intake is high to maintain a balance. When our bodies lose water the kidneys will retain water which produce small amounts of concentrated urine. Life cannot exist without electrolytes. http://www.medicalnewstoday.com/articles/153188.php All higher forms of life
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cotton to 15 parts acid. concentrated nitric acid concentrated sulfuric acid cotton balls (almost pure cellulose) Nitrocellulose Preparation Chill the acids below 0°C. In a fume hood‚ mix equal parts nitric and sulfuric acid in a beaker. Drop cotton balls into the acid. You can tamp them down using a glass stirring rod. Don’t use metal. Allow the nitration reaction to proceed for about 15 minutes (Schönbein’s time was 2 minutes)‚ then run cold tap water into the beaker to dilute the acid. Allow the water
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1. The label CORROSIVE on a chemical container indicates Ans : ( b ) that contact destroys living tissue as well as equipment 2. FLAMMABLE means Ans : ( a ) easily ignited and capable of burning rapidly 3. " Fatal if swallowed " indicates Ans : ( c ) that the substance will cause death if ingested 4. What is the correct way to handle the following situation? Briefly explain. a. Chemical : Acetic asid i. Inhalation exposure Ans : Remove the person from the exposure. Begin rescue
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Primary functions of the kidney: — Maintaining homeostasis through the regulation of fluid and electrolytes and removing wastes through the formation of urine. ž Other important functions: — Regulation of acid-base balance — Control of blood pressure — Renal clearance — Regulation of RBC production — Synthesizing vitamin D to the active form — Secreting prostaglandins — Regulating calcium and phosphorus balance. Nephron ž Each kidney has about 1 million
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EXAM VERSION D NAME: __________________________________________________________ IB131 HUMAN ANATOMY Fall‚ 2009 FINAL EXAM (150 pts) Please read the questions and instructions carefully and respond concisely within the space provided. Read through the entire exam and adjust your pace accordingly. READ CAREFULLY! Be sure to fill in the double bubbles where appropriate (e.g.‚ “AB” gets both “A” and “B” bubbles filled in). Good luck and enjoy!☺
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Gravimetric method is by the quantitative determination of the mass of anhydrous Barium Sulphate precipitate. Barium sulphate precipitate is form when Barium Chloride is added excessively to a hot given Sulphate solution slightly acidified with concentrated Hydrochloride acid. The white precipitate of hydrate Barium Sulphate formed is than digest‚ filtered out‚ washed and dried than cool down in a desiccator. Anhydrous Barium Sulphate is formed and weight using analytical balance. We will find that
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CONTACT PROCESS Sulfuric acid is one of the most important industrial chemicals Outline three uses of sulfuric acid in industry 1. The major use of sulfuric acid in Australia is in the manufacture of fertilizers such as ammonium sulfate and superphosphate. Superphosphate is produced by reacting sulfuric acid with rock phosphate. Ammonium sulfate is produced by neutralising ammonia with sulfuric acid. 2. Production of titanium (IV) oxide from titanium minerals eg ilmenite. Titanium is an important
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Neutralization experiment AIM:- To investigate how heat is given out in neutralizing sodium hydroxide (NaOH) using different concentrations of Hydrochloric Acid. Background Information:- Substances that neutralize acids are called alkalis. An acid is a substance that forms hydrogen ions (H+ ) when placed in water. It can also be described as a proton donor as it provides H+ ions. An example of an acid is hydrochloric acid (HCl)‚ Sulphuric acid (H2SO4) etc. An alkali is a
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written about determining the quantitative amount of sulphate inside barium sulphate‚ BaSO₄‚ using the method of gravimetric analysis. This quantitative determination is done by the addition of a dilute solution of barium chloride slowly to a hot unknown sulfate solution slightly acidified by concentrated hydrochloric acid‚ HCl. The white precipitate of barium sulphate is filtered off‚ washed with water‚ oven-dried‚ and weighed as barium sulphate. The quantitative amount of sulphate is deduced from
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gain water molecules from another solution. A dilute solution‚ with its high proportion of free water molecules‚ will have a higher water potential than a concentrated solution‚ because water flows from the dilute to the concentrated solution (from a high to low water potential). Pure water (Distilled Water) has the highest possible water potential because water molecules will flow from pure water to any other aqueous solution‚ no matter how dilute. When two such solutions (one strong‚ one weak)
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