DENISTY LAB 2/25/13 Chemistry H. Mrs. Halme Objective: Your task is to determine the density of 3 known metals: Zinc‚ Copper‚ and Lead. They are each marked. You must then calculate the density of an unknown metal and determine its identity based on your data from your known samples. Reagents: None Equipment: Lead Copper Zinc Triple Beam Balance Graduated cylinder Unknown metal (Magnesium) Beaker Calculator Procedures Preparation: We observed the given equipment
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Organic Lab 1: Fractional Distillation Discussion: With the purpose of the experiment being to identify the 30 mL of unknown liquid‚ the theoretical basis of simple and fractional distillation must be deconstructed and applied to the data obtained describing the liquid in question. Simple distillation is a separation technique which can be used to separate and purify distillates from a liquid mixture which ideally contains one volatile and one non-volatile compound. If such ideal conditions are
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Chemistry 207 (Lab # 1) 9/11/12 Experiment #1: Cooperative Identification of an Organic Solid A. What needs to be done: In this lab‚ one will identify the identity of a colorless organic solid by experimentally finding the physical properties of the solid. Such properties include melting point‚ mixed melting point‚ and IR spectrum. With these properties‚ one will be able to compare their results of the organic solid to see if any other classmates have the same unknown sample. B. Timeline:
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A polymer is a substance formed by many molecules that are all strung together to form a long chain‚ and has been around since the beginning of time (Polymer). Examples of different polymers being used in everyday life are things like rubber and starch‚ which are both frequently used in the world (Brewer). Polymers also make up what are known as “polymer creatures‚” which are the things that are used in experiments about polymers. The polymer creatures‚ made out of two different polymers‚ are both
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form larger molecules known as polymers. In doing so‚ monomers release water molecules as byproducts. This type of reaction is known as dehydration synthesis. In a dehydration synthesis reaction‚ the hydrogen of one monomer combines with the hydroxyl group of another monomer‚ releasing a molecule of water. At the same time‚ the monomers share electrons and form covalent bonds. As additional monomers join‚ this chain of repeating monomers forms a polymer. Polymers are broken down into monomers in
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Dealing with polymer waste Polymers can be made into a huge variety of items rather easily; this is why it is so popular. Nowadays it is used everywhere from everyday items such as cups‚ milk bottles and plastic bags‚ to medical and laboratory equipment. All applications use different types of polymers such as polyethene‚ polyvinyl chloride and polypropene. Polymers‚ also‚ can be used as a fuel source by burning under controlled conditions to release heat energy and therefore electricity. Despite
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! Name: Laura Romero ! 5.04H: Gas Stoichiometry Lab Worksheet Data and Observations: Present all relevant data in a data table below. Include an observations section for any observations that you made during the lab. (5 points) Data Table Mass of magnesium strip (grams) 0.032 g Volume of gas collected (mL) 30mL Barometric pressure (atm) 1.1 atm Room Temperature (°C) 22 °C Vapor pressure of the water (torr) 19.8 torr ! ! Calculations: ! 1. Write the
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JOMO KENYATTA UNIVERSITY OF AGRICULTURE AND TECHNOLOGY DEPT: CIVIL ENGINEERING UNIT: CHEMISTRY 1 (SCH 2109) PRACTICAL REPORT EXPT 2: Standardization and Determination of Concentration of Hydrochloric Acid in a Given Solution by ARAKA BRAMWEL MBOGO EN251-0221/2010 TITLE: STANDARDIZATION and DETERMINATION OF THE CONCENTRATION OF HYDROCHLORIC ACID PRESENT IN A GIVEN SOLUTION Aims: To be able to standardize Sodium Hydroxide (NaOH) solution using a standard solution of Oxalic acid
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OF EXPERIMENT The purpose of this lab was to determine the magnitude of the uncertainties produced when making measurements using common lab equipment. II.APPARATUS AND MATERIALS NEEDED safety goggles distilled water (at 20°C) laboratory apron dropper laboratory balance 2 objects of unknown mass standard masses graduated cylinder‚ 10-mL graduated cylinder‚ 100-mL III.PROCEDURE Part A: Estimating the Uncertainty of a Balance 1.We put on lab aprons and goggles. Then‚ we used the
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of the raw weight is lost in processing. Once natural wax‚ protein‚ and other unnecessary things are removed‚ what’s left is a natural polymer of pure cellulose. Cellulose is the structural component of the cell walls of green plants‚ many forms of algae and the oomycetes. Some species of bacteria separate it to form biofilms. Cellulose is the most common organic compound on Earth. About 33% of all plant matter is cellulose (the cellulose content of cotton fiber is 90%). This cellulose is arranged
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