Lab One: Laboratory Techniques and Measurements Abstract The Lab One was done on Laboratory Techniques and Measurements. The first experiment with my Lab partner; we got opportunity to experiment how to conduct measurements in length by using metric conversion. We started in cm units and changed into mm by x10‚ and moving decimal point x1 to right. To find in meter we moved from cm to meter two decimal points to the left or double check our self divided by 100 and all records in data
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CHAPTER I INTRODUCTION Background of the Study The use of plants for remedies has long been in existence and is among the most attractive sources for developing drugs (Bukantis et al.‚ 1980). Any part of plant can be considered as herbs including leaves roots‚ flower‚ seeds‚ resins‚ leaf sheath‚ bark‚ inner bark (cambium)‚ berries and sometimes the pericarp or other portion (Holetz et al.‚ 2002). Most primates depend heavily on the leaves‚ fruits‚ and flowers of tropical plants to meet their nutritional
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Lab 5 Column Chromatography: Isolation of Lycopene from Tomato Paste Reading: Zubrick‚ pages 79-82‚ 127-130‚ 138-139‚ 141-143‚ and 235-240 Pre-lab: look up the structure of lycopene. Introduction: Lycopene is the red pigment in ripe tomatoes and‚ as an antioxidant‚ helps to fight certain cancers. In this lab you will isolate lycopene from tomato paste. To do this you will first extract carotenoid pigments from the paste and then use column chromatography to isolate the lycopene from
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Procedure 2.0 g of Mo(CO)6 and 10 mL of mesitylene were added into a 50-mL round bottom flask along with a small magnetic stir bar. A 30-cm reflux condenser was attached to the round bottom flask and a gas inlet was then connected to the condenser and to the bubbler. Since Mo(CO)6 and the product tends to react with oxygen at high temperatures this reaction must take place in an inert atmosphere. Therefore‚ the gas inlet was connected at the top of the condenser to a nitrogen source and was flushed
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Properly set up a standard curve 2. Using the prepared curve‚ determine the concentrations for control and patient specimens. Materials and Reagents: 2ml 1M Sulfuric Acid 2ml of 0.1M Potassium Dichromate Distilled Water Pipettes Volumetric Flask Test Tubes Procedure: 1. Prepare 1 ml glucose solution and place in test tubes 2. Add 2ml of 1M Sulfuric Acid solution 3. Add 2ml of 0.1M Potassium Dichromate solution 4. Start timing until the color disappear Results and Discussion:
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Conical Flask | X1 | Electronic Balance | X1 | Sand-Salt Sample | Given Amount | Evaporating Basin | X1 | Bunsen Burner | X1 | Gauze Mat | X1 | Tripod | X1 | Thermometer | X1 | Distilled Water | Given Amount | Method: 1. Record mass of sand-salt sample‚ beaker‚ evaporating basin and filter paper on electronic balance. 2. Add distilled water to sample. Mix thoroughly with stirring rod until salt dissolves. 3. Filter out salty water from sand to a conical flask. 4
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End product weighed 0.109g of cyclohexane and tested positive with bromine test Discussion: In order to perform this experiment‚ a distillation apparatus was assembled. 4.0mL of H3PO4 and 3.0mL of cyclohexanol was placed in the round-bottom flask as sell as 5 drops of H2SO4 and a magnetic stir bar. The flow of water was then started through the condenser and the reaction mixture was heated while the magnetic stir rod began stirring. Once distillation was complete and no more liquid distilled
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pipette‚ 25 cm3 pipette filler methyl orange indicator 1 M NaOH solution‚ standardized 1 M hydrochloric acid‚ standardized ethanol wash-bottle with de-ionized water mortar and pestle forceps safety spectacles 2 beakers‚ 100 cm3 volumetric flask‚ 250 cm3 filter funnel‚ small magnetic stirrer pH meter electronic balance Procedures 1. The attached membrane of the eggshell was removed carefully by forceps and the remaining eggshell was ground into a fine powder with mortar and pestle
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dissolved in the distilled water by stirring leaving the sand and iron (III) oxide. It then has to be filtered. After folding we placed the fluted filter paper into a funnel‚ the mud was placed into the top. The funnel was then placed on to a conical flask. After some time the mud will filter through in the form of a liquid. This is then put into a evaporation dish. Then the dish placed this evaporation dish on top of the tripod over a lit Bunsen burner on the blue flame. After a short amount of
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conical vial charged with p-cresol (80uL from Eppendorf pipette)‚ 25% aqueous NaOH (130uL)‚ and a spin vane. The solution was mixed thoroughly and tetrabutylammonium bromide (9mg) was added along with n-propyl iodide (75uL) and it was equipped with a flask with a water reflux condenser. The solution was heated (95-100°C) while vigorously stirring it. After 60 minutes‚ the solution was allowed to cool to room temperature. 1 mL of ether was added to the reaction vial. The two layers were mixed and the
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