Aim: To determine the water of crystallization in washing soda crystals (Na2CO3.xH2O) Research Question: What is the percentage composition and the amount (in moles) of water in the given ionic hydrate? (Na2CO3.xH2O) Background Information: Sodium Carbonate also known as Washing Soda (Na2CO3.xH2O) is a sodium salt of carbonic acid. Sodium carbonate is domestically well known for its everyday use as a water softener. It is also used to remove grease‚ oil and wine stains. It can be extracted from
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ABSTRACT What is the fastest way to cool a soda? In this experiment‚ 8 cans of soda were used to determine the fastest method the cool the can of soda. The four alternative methods were the freezer‚ the refrigerator‚ ice cubes‚ and also an ice bath. Using 2 cans for each method‚ and measuring the temperature at increments of 5 minutes‚ the experiment was complete when the temperature stabilized. In conclusion‚ the fastest way to cool a soda was the soda in the freezer at -2 degrees Celsius. The
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condition which tested most effervescent was when the soda water was under cold temperatures and the least effervescent temperature was when the soda water was warm. When left standing without the lid‚ the soda water proved to be least effervescent. As seen in the above graph‚ under cold temperatures‚ ‘Schweppes’ demonstrated that it was the most effervescent‚ but under warm and room temperatures ‘Woolworths’ brand was most effervescent. When the soda water was stirred‚ ‘Regal’ was recorded with the highest
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grams | Mass of crucible‚ lid‚ and anhydrous MgS04 | 12.82 grams | Mass of anhydrous MgSO4 | 1.45 grams | Mass of water in hydrated MgSO4 | 1.55 grams | Moles of anhydrous MgSO4 | 0.0120 moles | Moles of water in hydrated MgSO4 | 0.0860 moles | Observation of anhydrous MgSO4 | Different shade of white‚ more thicker and solid; powder-like | 3. To obtain the mass of water‚ first measure the mass of the crucible with the lid and anhydrous MgSO4 and then obtain the mass of the crucible with
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Crystallization Because chemists always want to get the chemicals they get as pure as possible. And a good way to purify chemicals is to make crystals of them. When they are in solutions you can have all sort of impunities but when they form crystals the crystals contain much purer compounds than in the solution and the impurities are left in the solution. generally the crystal is a very precise arrangement of molecules all the same fitting together like pieces and some sort of construction
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Lab # 4 Crystallization Jonathan Odell Partners: Allyson Chiu Michelle Jung Regine Ong Day 1 Period 3 Experiment conducted: November 15‚ 2012 Submitted date: November 21‚ 2012 Introduction: In this lab‚ the students were separated into groups of four in which were given a test tube that was half full of hydrate sodium thiosulfate. The experiment’s purpose was to observe the reaction of the hydrate sodium thiosulfate in different situations‚ such as being shook over a period of time
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Contents 1. Introduction and literature review 1.1 Polypropylene 1.1.1 Polypropylene crystallization 1.2 Polymer degradation 1.3 Broadband dielectric 1.4 Solubility and the cohesive energy density 1.5 Literature review 2. Experimental method 2.1 Solubility of SN 1010 in various solvents 2.2 Calibration curve 2.3 Preparation of polymer/antioxidant mix for films 2.4 Soxhlet extraction 2.5 Broadband dielectric analysis of films 2.6 Broadband dielectric analysis of molten samples
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The crystallization of lysozyme to model a step for protein structure determination Asaad Ahmed November 6‚ 2014 TA: Ujwal Abstract: Discovery of new protein structures is essential for advancement in a variety of scientific fields. By determining structures of proteins‚ scientists are able to identify active sites‚ which can lead to accomplishments such as the development of pharmaceuticals that can enhance or inhibit certain proteins in a variety of signaling pathways. To determine protein structures
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Discussion: Extraction and crystallization- The purpose of this lab was to extract and crystallize compounds in a mixture using acids and bases. 1 gram of the unknown was dissolved into 30 mL of ethyl acetate. The mixture was then transferred to a separatory funnel. Using aqueous solutions of different pH we were able to separate organic acids‚ bases and neutral compounds from each other. Using three 10 mL portions of HCl‚ we reacted the HCl with the base in solution. This made it possible to
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crystal Crystallization is a highly effective method for the purification of organic substances‚ provided that the physical properties of a given compound permits its purification in this manner. Solid organic compounds when isolated from organic mixtures or reactions are seldom pure; they are usually contaminated with small amounts of other compounds called impurities. Solid purification by crystallization is based upon different solubility in a given solvent. Simplest crystallization process
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