periodic table. ____________________________________________________________________________________ MATERIALS AND METHODS For Group IA and IIA Elements Place a small amount of each sample of Lithium‚ Sodium‚ Potassium‚ Magnesium‚ Calcium and Barium in different test tubes. Identify the physical state‚ color and appearance of each. Test the solubility in 10mL of water. For Group IVA Elements Place a small amount of each sample of C‚ Sn‚ Si and Pb in different test tubes. Identify the physical
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VCE Chemistry Week 1 - Chemical Analysis (1) Horizen Education February 8‚ 2013 1 1.1 Review: Gravimetric and Volumetric Analysis Gravimetric Analysis Solubilities Always soluble: Usually soluble: Exceptions: Na+ ‚ K+ ‚ NO3− ‚ CH3 COO− ‚ NH+ 4 Cl− ‚ I− ‚ Br− i. Sodium carbonate and Silver nitrate ii. Iron (II) sulfate and Lead (II) nitrate iii. Sodium nitrate and Nickel sulfate iv. Potassium hydroxide and Copper (II) nitrate v. Sodium sul de and Cadmium sulfate Ho
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Selective Precipitation of the Barium Magnesium Group ABSTRACT The purpose of this lab was to identify the cations from the barium magnesium group present in an assigned unknown solution through selective precipitation. This was a qualitative lab where the theory of the common ion effect was used in several steps. Once the experiment was completed‚ it was determined that unknown solution #4 contained Ba2+‚ Sr2+‚ and Mg2+ ions. INTRODUCTION Selective precipitation is a part of chemistry
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First we will place 0.5 mL of each solution in the 24-well plate. I placed the following solutions in the following locations: SOLUTION WELL PLATE LOCATION Sodium Nitrate NaNO3 A1 Strontium Nitrate Sr(NO3)2 B1 Potassium Nitrate KNO3 C1 Barium Nitrate Ba(NO3)2 A6 Cupric Nitrate Cu(NO3)2 B6 Lithium Nitrate LiNO3 C6 Calcium Nitrate Ca(NO3)2 D6 Unknown C4 I assembled my needed equipment‚ my burner fuel‚ my non-plastic middle cotton swabs and my well plate with the
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Emission Spectra & Flame Tests Intro The emission spectrum is used in modern chemistry to help further studies of wavelengths and the spectrum. When a metal in a compound reacts in a flame and produces a color‚ it helps to show the strongest color in the emission spectrum. The purpose of performing these operations on the flame was to see how different metals would react. Using a spectroscope‚ it is possible to observe the line emission spectrum produced by sunlight‚ artificial light‚ and
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Carlie Haeffner Qualitative Analysis March 20‚ 2015 The purpose of this lab is to identify unknown ions in a solution by using a type of chemical reaction called precipitate reactions. The key to finding which ions are present in a solution is to form a precipitate which makes the ions “come out” in a reaction (McNeil‚ 2013-2014). Water is used in these experiments to act as a solvent. Since water is a polar molecule‚ the slightly positive and negative charges will sometimes pull apart molecules
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HYPERTROPHIC PYLORIC STENOSIS: It is the type obstruction that is common on infants where by the antra muscle at the orifice of pylorus hypertrophy and causes obstruction (BONTRAGER‚ 2014). Symptoms of HPS starts showing up within three to six weeks after birth and in rare case for babies at the age of older than 3 month (STAFF‚ 2012). This may include projectile vomiting after feedings‚ acute pain‚ distension of stomach‚ and in prolonged delay in diagnosis can lead to dehydration‚ abdominal pain
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Poop Pills Article Every year millions of Americans get an infection in the stomach called Clostridium difficile (aka C-diff). There are antibiotics that can cure it but in the past they haven’t worked as well as expected. They kill off the infection but in the process it destroys good bacteria too. This can cause another infection in the future because your body isn’t powerful enough to prevent it. There are other cures to C-diff too‚ like fecal transplants. This is the process where stool from
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Constipation can be caused by numerous factors or health conditions. It is pivotal for the provider to diagnose the right cause of constipation on order to be able to select the appropriate treatment. According to Edmunds‚ & Mayhew (2014)‚ all laxatives work by increasing fluid retention in the colon. There are five different types of laxative that can be used depending on the type of constipation. Bulk laxatives are non-digestible and non- absorbable‚ which cause the stool to absorb water‚ expands
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Effects of Codeine on the Human Body Codeine is mainly used as a pain reliever‚ but is also used for the relief of a non-productive cough‚ and as an anti-diarrheal agent. 120mg of codeine administered SC (subcutaneously‚ injected under the skin) provides pain relief equal to 10mg of morphine administered by the same route. Doses used to relieve cough or diarrhea range from 5mg to 30mg. Codeine is absorbed quickly from the GI tract and it’s first pass through the liver results in very little loss
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