observing the color flame that is produced. Flame tests are a common confirmation test to identify specific elements. Procedure: I began the lab by preparing a safe work area and the required metallic ions. The ions used in this lab were as follows: Barium Nitrate‚ Calcium Nitrate‚ Cupric Nitrate‚ Lithium Nitrate‚ Potassium Nitrate‚ Sodium Nitrate‚ Strontium Nitrate‚ and an unknown solution. I placed 0.5 mL of sodium nitrate into a well on the 24-well plate‚ recording its location. I placed 0.5 mL
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Although the term “dysphagia” is often regarded as a symptom or sign‚ it can be used to describe a medical condition in its own right. Many people that suffer from dysphagia are unaware of it – in such cases‚ it may go undiagnosed and untreated. This raises the risk of aspiration pneumonia‚ a serious lung infection that can develop after the accidental inhalation of saliva or food particles. Undiagnosed dysphagia may also lead to dehydration and malnutrition. A physical examination and a variety
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for CAPE by Susan Maraj and Arnold Samai Periodic Trends in Group II Elements in Group II The elements in Group II are called alkaline earth metals. Be‚ Mg‚ Ca‚ Sr‚ Ba‚ Ra Beryllium‚ Magnesium‚ Calcium‚ Strontium‚ Barium‚ Radium These elements bond by metallic bonds (intramolecular forces) to form giant metallic structures. The size of the atoms increases down the group Physical properties of Group II metals Ionization The process of removing an
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College Board Standards: n STANDARD 1 Rhetorical Analysis and Planning Objective W1.1 Student analyzes components of purpose‚ goals‚ audience‚ and genre. STANDARD 2 Generating Content Objectives W2.1 Student takes inventory of what he or she knows and needs to know. W2.2 Student generates‚ selects‚ connects‚ and organizes information and ideas. STANDARD 3 Drafting Objectives W3.1 Student generates text to develop points within the preliminary organizational structure. W3.2 Student makes
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complete blood count‚ arterial blood gases‚ bronchoscopy‚ CT scan‚ and blood cultures. Another test that can be performed to determine if aspiration is a factor would be the swallow test. In this test‚ a doctor gives you barium to ingest while a chest x-ray is performed. The barium swallow test can highlight abnormalities in the upper gastrointestinal tract‚ pharynx‚ esophagus‚ and stomach. It is usually read by a licensed speech pathologist. The chest x-ray would usually reveal patchy‚ mottled‚ segmental
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strontium and barium Calcium sulphate is sparingly soluble‚ and you can think of strontium and barium sulphates as being insoluble. That means that you will get a layer of insoluble sulphate on all of these which will slow down the reaction or stop it entirely. In the calcium case‚ you will get some hydrogen produced together with a white precipitate of calcium sulphate. -------------------------------------------------------------------------------- Note: With strontium and barium‚ I have
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solubility rules my results proved accurate. Just by looking at the solubility rules‚ my results were what I expected them to be. I found that sodium chloride did not react with any of the five substances and that the sodium sulfate only reacted with the barium nitrate. The sodium bicarbonate‚ sodium carbonate as well as the sodium hydroxide reacted with all five substances. This was expected because the solubility rules stated that these were all insoluble substances. I was careful to add exactly two drops
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from heat‚ sparks‚ open flames‚ and hot surfaces. Magnesium Nitrate may cause skin and serious eye damage‚ corrosion or irritation also it is very flammable. Calcium Nitrate Is very reactive and a oxidizer‚ It will also irritate any contact point. Barium Nitrate and Strontium Nitrate also have similar affects to exposed skin and they are also oxidizers. III. Pre-Lab Questions- What are the group 1 elements called‚ they are called alkali metals. List the group one elements‚ Hydrogen‚ Lithium‚ Sodium
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tests: Barium chloride Calcium chloride Copper (II) chloride Magnesium chloride Potassium chloride Sodium chloride Unknown solids containing a single cation and labelled X‚ Y and Z Apparatus: Bunsen burner Insulation mat Platinum wire (or Nichrome wire)‚ Watch glass Safety precaution: As concentrated hydrochloric acid is corrosive‚ skin contact should be avoided. It is preferable to use polythene gloves and wear goggles while handling it. Copper (II) chloride and barium chloride
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Hydrogen Peroxide & Inorganic Peroxy Compounds Hydrogen Peroxide Hydrogen peroxide (H2O2) is the simplest peroxide (a compound with an oxygen-oxygen single bond). It is also a strong oxidizer. Hydrogen peroxide is a clear liquid‚ slightly more viscous than water. In dilute solution‚ it appears colorless. Reactions Decomposition Hydrogen peroxide decomposes exothermically into water and oxygen gas spontaneously: 2 H2O2 → 2 H2O + O2 This process is thermodynamically favorable. It has
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