observing in this experiment. Materials: · Nichrome wire wand · Test tubes containing water · Test tubes containing 6M hydrochloric acid as needed to clean wire · Test tubes containing: Copper sulfate Potassium sulfate Copper nitrate Potassium nitrate Strontium nitrate Calcium nitrate Copper chloride Strontium chloride Calcium chloride Cobalt chloride Sodium chloride Sodium nitrate Sodium sulfate Barium clroride Calcium nitrate · Tirrel burner · Matches
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THE INTRODUCTION TO SOAP MANUFACTURE BY W. H. SIMMONS‚ B.Sc. (Lond.)‚ F.C.S. AND H. A. APPLETON It has been said that the use of soap is a gauge of the civilisation of a nation‚ but though this may perhaps be in a great measure correct at the present day‚ the use of soap has not always been co-existent with civilisation‚ for according to Pliny (Nat. Hist.‚ xxviii.‚ 12‚ 51) soap was first introduced into Rome from Germany‚ having been discovered by the Gauls‚ who used the product obtained
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Important Ions in the Body and the Roles They Play Everyday Functions of the Human Body The human body uses many forms of energy to conduct daily activities. These activities can be ones that we are doing physically or they can be as basic as the breakdown of enzymes within our body or the digestion of food. Chemical energy‚ electrical energy‚ mechanical energy‚ and electromagnetic energy are a few but important forms of the type of energy utilized by the human body. Ions play an important
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For years‚ hypertension has been one of the reason of mortality in the Philippines. Despite the efforts of the government in lowering cases of hypertension in the country‚ it continued to rise. Black‚ et al (2009)‚ simply stated‚ arterial hypertension is high blood pressure. It is defined as a persistent elevation of the systolic blood pressure (SBP) at a level of 140 mm Hg or higher and a diastolic blood pressure (DBP) at a level of 90mmhg or lower. According to Kozier (2008)‚ normal systolic blood
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of gases‚ meaning that decreasing the temperature of the system will increase the solubility of gases. In this experiment‚ the effect of temperature on the solubility of potassium nitrate‚ KNO3‚ in the universal solvent‚ water‚ will be analyzed. Purpose: To determine the effect of temperature on the solubility of potassium nitrate‚ KNO3‚ in water. General Safety: * Goggles * Use test tube holders when removing test tubes from hot water bath * Use gloves to remove hot water bath
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Dehydration SCI/241 October 24‚ 2010 Dehydration What is Dehydration? Dehydration is defined as the process of losing excess amounts of water‚ which depletes the body of essential fluids. Dehydration can be caused by various factors‚ however
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of sodium and potassium in blood. A steroid hormone called aldosterone is secreted by the adrenal cortex in respond to rennin secreted by the kidney cells to stimulate potassium excretion by active reabsorption of sodium in distal and collecting ducts. Aldosterone increase active secretion of potassium in distal convoluted tubules and also stimulates the reabsorption of sodium on collecting ducts. Antidiuretic hormone also helps to regulate the concentration of sodium and potassium in blood. Antidiuretic
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product must be precipitated out of the solution and then weighed. For this lab‚ lead (II) nitrate (Pb(NO3)2) and potassium chromate (K2CrO4) will be reacted together to demonstrate double replacement reaction between 2 ionic compounds. This was shown when chromate replaced the nitrate and formed lead (II) chromate‚ and when the nitrate replaced the chromate and formed potassium nitrate‚ which is shown in the following equation: Pb(NO3)2 + K2CrO4 PbCrO4 + 2KNO3 In this experiment
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very reactive metals and do not occur freely in nature. Alkali metals are malleable‚ ductile‚ and are good conductors of heat and electricity. Alkali metals can also explode if they are exposed to water. The Alkali metals are: lithium‚ sodium‚ potassium‚ rubidium‚ cesium‚ and francium. Lithium The mineral petalite‚ which contains lithium‚ was discovered by a Brazilian scientist named Jose Bonifacio towards the end of the 18th century. Then in 1817‚ lithium was discovered by Johan August Arfvedson
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fresh and cooked sausages. Cure #2 — 6.25% Sodium nitrite: 4% Sodium nitrate and 89.75% Salt For dry-cured sausages. Tender Quick — 0.5% Sodium nitrite‚ 0.5% Sodium nitrate‚ Salt‚ Sugar‚ and Propylene glycol. For brine curing. Saltpeter — 100% Potassium nitrate‚ it is not recommended due to difficulty in measurements. In high concentrations it may yield these possible side effects. They are the results or various studies. Prague powder concentration in finished products is limited to 200 ppm as
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