known as common salt. It is important because it is essential to the health of human beings and of animals. for domestic use it is fined down to what is known as table-salt‚ and small quantities of other chemicals are added to it to keep it free-flowing when in contact with the atmosphere. Salt and potassium are combined to produce iodised salt‚ used when iodine is lacking in diet. It’s absence cause goitre‚ the swelling of the thyroid gland. Livestock as well as humans need salt‚ and this provided
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Let us take a look at some typical types of boilers. Firetube boilers Firetube boilers consist of a series of straight tubes that are housed inside a water-filled outer shell. The tubes are arranged so that hot combustion gases flow through the tubes. As the hot gases flow through the tubes‚ they heat the water surrounding the tubes. The water is confined by the outer shell of boiler. To avoid the need for a thick outer shell firetube boilers are used for lower pressure applications. Generally
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amounts in the diet may cause deficiency diseases. There are fat-soluble and water-soluble vitamins. Fat-soluble vitamins are stored in the fat tissues of our bodies‚ as well as the liver. Fat-soluble vitamins are easier to store than water-soluble ones‚ and can stay in the body as reserves for days‚ some of them for months. Water-soluble vitamins do not get stored in the body for long - they soon get expelled through urine. Water-soluble vitamins need to be replaced more often than fat-soluble ones.
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Chemistry Salt Analysis Cheatsheet Version 2.0 © 2008 Ankur Banerjee All Rights Reserved. Only important stuff for CBSE Class 12th Chemistry practical syllabus has been included‚ not everything. 2. WE + acidified K2Cr2O7 2 = sol 3 turns green 3. WE + acidified KMnO4 = pink colour of KMnO4 is discharged 4. Sulphide: Colourless gas with a smell of rotten eggs (H2S); turns lead acetate paper black 1. Sodium nitroprusside test: WE + sodium nitroprusside 4 = purple / violet colour 2. Lead acetate
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My St. Patrick’s Day Oddity Written by Christopher Kang One day I found the end of the rainbow and at it there was‚ not gold‚ but a pot of leprechaun dust... Chapter 1 One sunny‚ and bright day‚ I was hiking through the meadows that seemed that they had no end. I wanted to camp here for today. All seemed very right but I was wrong‚ indeed. Chapter 2 I slept like a bear hibernating the whole entire winter. I packed all my equipment I would need today. Hours later I traveled really far away
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WATER OUR LIFELINE Water is a transparent fluid which forms the world’s streams‚ lakes‚ oceans and rain‚ and is the major constituent of the fluids of living things. As a chemical compound‚ a water molecule contains one oxygen and two hydrogen atoms that are connected by covalent bonds. Water covers 71% of the Earth’s surface.[1] It is vital for all known forms of life. On Earth‚ 96.5% of the planet’s water is found in seas and oceans‚ 1.7% in groundwater‚ 1.7% in glaciers and the ice caps of Antarctica
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Dissociation: Dissociation in chemistry and biochemistry is a general process in which ionic compounds (complexes‚ or salts) separate or split into smaller particles‚ ions‚ or radicals‚ usually in a reversible manner. Strength of Acids: The strength of an acid refers to its ability or tendency to lose a proton. There are very few strong acids. A strong acid is one that completely ionizes in water. In contrast a weak acid only partially dissociates. Examples of strong acids are hydrochloric acid (HCl)‚ hydroiodic
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Objective 1. Use the analytical balance to weigh a given hydrated salt as accurate as possible in order to determine the weight of water in the salt Introduction Balances are important laboratory equipment as they are used to determine the mass of materials. Today‚ most balances used in the laboratory are analytical balances which can give readings up to four decimal places or higher. High accuracy is needed in certain experimental work such as material analysis or those involving small change
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Figures Abstract An experiment was designed and conducted to confirm Archimedes’ theory which states that an object will float in water providing its mass is equal to or less than the volume of water it displaces. The second objective of the experiment was to produce a value for water density. It was expected that when additional mass was added to a floating vessel‚ it would displace more fluid and the increasing submerged volume of water could be measured‚ and a value for water density could be calculated
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lived a salt merchant. He had a monkey for his assistance. Every morning‚ he would load a sack of salt on the donkey and go to the nearby town to sell it. On the way‚ they had to walk across a pond. One day‚ while crossing the pond‚ the donkey thought‚”Ooh! This load is so heavy that I become exhausted very soon. I wish I could get some of this load taken off my back.” Just then the donkey tripped and fell into the water. Fortunately‚ the donkey was not hurt. But the sack of salt on the donkey’s
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