substance‚ they are insoulubale. All of my phosphates formed a insoluble precipitate which is correct accourding to the solubility rules. All of my iodine reactions should have been soluble‚ my exception was Sodium Iodide and Copper(II) Nitrate. My barium Nitrate combined with Sodium sulfate was insoluble with is correct accourding to the solubility rules. All reactions with Chloride should have been soluble and they were. All Bicarbonate were in soluble‚ these I thought were soluble‚ until I moved
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Investigation 3 Determine the Limiting Reagent Chemistry Investigation 3 Limiting Reagents Aim: To determine the limiting reagent in a reaction. Hypothesis: if the number of moles of the solutions added together equals the stoichiometry ratio in the balanced equation‚ then we would not expect a limiting reagent in the reaction. Independent variable: The number of moles of the reactants Dependent Variable: The limiting reagent Constant Variable: The volume of reactants added Equipment:
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solubility‚ temperature‚ and crystallization. Reagents and Media: 1.0 M sodium acetate 1.0 M sodium acid 1.0 M sulfuric acid 1.0 M sodium hydroxide Ice 0.1 M lead nitrate 0.1 M barium chloride 1.0 M cadmium chloride 1.0 M ammonium chloride potassium chloride 0.1 M potassium chloride 0.1 M copper (II) sulfate 0.1 M trisodium phosphate 0.1 M sodium sulfide
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column. The statue of the happy prince sees all the misery of the city. He weeps when he sees people in trouble. He wants to help them. A swallow stays at the feet of the statue of the happy prince for the night. On happy prince’s request‚ he prolongs his stay and helps the poor with the ruby and the sapphires. When the happy prince cannot see any more‚ the swallow decides to stay with the happy prince forever. The he helps the people with the gold covering of the happy prince. At the end‚ he dies frost
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APPENDECTOMY An appendicectomy (or appendectomy) is the surgical removal of the vermiform appendix. This procedure is normally performed as an emergency procedure‚ when the patient is suffering from acute appendicitis. In the absence of surgical facilities‚ intravenous antibiotics are used to delay or avoid the onset of sepsis; it is now recognized that many cases will resolve when treated non-operatively. In some cases the appendicitis resolves completely; more often‚ an inflammatory mass forms
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Gerona‚ Evelyn Chemical Reactions Experiment No. 7 Date Performed: Feb. 17‚ 2014 Date Submitted: Feb. 24‚ 2014 Mrs. Vitancol I. Theoretical Framework A chemical reaction is a process that leads to the transformation of one set of chemical substances to another. Classically‚ chemical reactions encompass changes that only involve the positions of electrons in the forming and breaking of chemical bonds between atoms‚ with no change to the nuclei (no change to the elements present)‚ and can often
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decomposition reaction (reaction between sodium sulphate and barium chloride) APPARATUS REQUIRED: 1. A rack of at least six clean test tubes and a boiling tube (hard glass test tube) 2. Two 100 cc beakers 3. A test tube holder CHEMICALS REQUIRED: 1. Small pieces of quicklime (CaO) in crystal form and not in powder form 2. Ferrous sulphate crystals 3. Copper sulphate solution 4. Iron filings 5. Sodium sulphate solution 6. Barium chloride solution 7. Distilled water 8. Acidified
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Exercise 14: Qualitative Anion Tests PURPOSE: The purpose of this experiment is to identify some commonly occurring anions & to study some of the reactions used for their identification. PROCEDURE: You must first determine to which of the three groups the various anions belong. Since no two people observe the same event in exactly the same way it is important to also conduct specific confirmation tests on the known samples of each anion. This information will help identify the anion
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In the book “Under the Rice Moon” by Rhiannon Puck‚ the little swallow is sad. It was sad because all of the people that had bought it said that they would take care of it. None of the people understood the little swallow. The swallow just wanted to fly and be free “Under the Rice Moon”. That was the only way you could take care of it. The last person to receive the swallow was a little girl. The girl was sick‚ she knew what it was like not being able to get out of a small space
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Confirmatory Tests for Cations & Anions prepared by alex teoh / Update: 29 Dec 2004-2205 h / 1st pub: 7 Sep 2001 @ CHIJ-St Joseph’s Convent Test for CATions * All cations must be present in aqueous states before tests can be conducted.. CATion ammonium zinc Reaction with aqueous Sodium Hydroxide NO ppt. Ammonia gas produced on warming. White ppt. [y] Soluble in excess aq. NaOH to form a colorless solution. [z] Zn2+ + 2OH- Zn(OH)2 (white ppt) Zn(OH)2 + 2OH- [Zn(OH)4]2- (aq) White ppt
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