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    Sick Cat Lab

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    identify what analgesic Jasper was given we took samples of the different analgesics and crushed them. We used a melting point apparatus to find out what the melting point was and matched it with acetaminophen‚ aspirin‚ or ibuprofen. Then we used the Infrared Spectroscopy to determine the function group of the molecules to help us identify which analgesic was used. Between the symptoms‚ melting point‚ and results of the infrared spectroscopy we were able to identify what analgesic Jasper ingested.

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    Separation of Mixture

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    The crude naphthalene had a melting point range of 85°-90° C while the 35.4% yield of pure naphthalene had a melting point range of 70°-76° C. Recrystallization was used to purify the salicylic acid. Recrystallization is the process of dissolving the original solid in a hot solvent and then allowing the solution to cool to let the solid crystallize again. The crude salicylic acid had a melting point range of 150°-153° C while the pure salicylic acid had a melting point range of 155°-158° C.

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    Aspirin Preparation

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    Preparation and melting point of Aspirin Aspirin is a painkilling drug and is produced worldwide to reduce and stop pain. Aspirin is made up of ehtanoylation of 2-hydroxbenzenecarboxylic acid in a presence of phosphoric acid. AIM: The aim of the experiment is to prepare and produce aspirin as pure as possible. I will do this threw preparing the aspirin and purifying the product threw recrystallization. I will then obtain a melting point of my product to get an estimate of its purity. By the end

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    Although widely considered a global success‚ sales growth and market share have been dwindling in the U.S. for Danone’s popular Evian bottled water brand. With the emergence of cola giants Coke and Pepsi’s bottled water brands‚ Dasani and Aquafina‚ the U.S. market share of Danone’s Evian brand has decreased by 50%. With only a 3.5% market share in 2001‚ CEO Franck Riboud was faced with making the strategic decisions for boosting the market presence on Evian in the U.S. In implementing a strategy

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    Chocolate investigation

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    Aim: To investigate the difference between the melting point of dark and milk chocolate. Hypothesis: If both chocolate is heated then dark chocolate will melt faster because milk chocolate has more fats Variables (i) Independent: Two substances will be tested dark chocolate and milk chocolate. (ii) Dependent: The temperature at which each substance melts

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    The literature value for the melting point range for Trans-9-(2-phenylethenyl)anthracene is 130-133 oC. The obtained range was lower than that at 120.3 to 123.8 oC. Because it is lower than the known value‚ this means the obtain product is not completely pure. Impurities in the compound can result in a decrease in the compounds melting point‚ which is observed here. The impurities could be 1-propanol due to an insufficient drying. If the experiment was performed again‚ the product would need to be

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    utilized in determining the identity of the unknown sample are listed in Table 1. Density (g/cm3) Molecular Weight (g/mol) Melting Point (ºC) Polypropylene 0.905 42.08 170 Polyethylene 0.92 28.05 130-145 Polycarbonate 1.2 158 310 Polystyrene 1.05 104 240 Polyvinyl chloride 1.4 62.5 160-172 Table 1 – Properties for five known polymers (Callister 737-775) The melting temperature of a polymer is the point at which it transforms from the solid form to a viscous liquid in which there is little

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    Systhesis of Dulcin

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    the temperature be raised when determining a melting point? When can the temperature be raised more quickly? 2) If there is an Impurity present in a sample‚ what is the effect on the melting point? 3) Explain why a) salt‚ spread on roads in the winter‚ helps prevent icing in‚ for instance‚ southern Ontario‚ and b) salt is useless on the much colder roads of Manitoba. 1) You would have to slowly raise the temperature up when determining the melting point due to the sensitivity of the dulcin

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    objective

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    OBJECTIVES: 1. to investigate the heating process for solid dodecanoic acid 2. to investigate the cooling process for liquid dodecanoic acid 3. to determine and compare the melting and freezing points of dodecanoic acid SUPPLIES: Equipment ring stand buret clamp hot plate test tube (18mm * 150 mm) assembly (half full with solid dodecanoic acid with thermometer embedded) beaker (400 mL) thermometer for water bath lab apron safety goggles Chemical Reagents dodecanoic acid‚ C11H23COOH

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    Physical Lab 15: Chemical and Physical Properties Experiment 1: Physical Properties of Water Data Table 1: Melting Point Data   Initial Time Final Time Observations Weigh Boat A  5:37 pm  7:00 pm 10 min- little puddle just started melting. 20 min- puddle under ice is a little bigger. 30 min- ice is melting more and getting a wetter appearance. 40 min- about half way melted. 50min- still slowly melting a bit more than half gone. 60 min- about a quarter of the cube remains. 70 min- a little les than a

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