Abstract: For the first part of this lab we refluxed different Carboxylic acids and alcohols in the presence of a acid catalyst in order to form Esters by Fischer Esterification. These Esters had different pleasant smells that we then evaluated. In the second part of the experiment‚ we broke the ester bonds of a triglyceride in order to form glycerol and carboxylate salts. This process is known as Saponification because it produces amphiphilic molecules that allow soap to remove dirt from the surface
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tables provided in the introductory comments for Lab #16 VSEPR Theory. Molecular Shape Number of Bonds About Central Atom Shape Description BF3 3 Trigonal planar BeCl2 2 Linear CH4 4 Tetrahedral PF5 5 Trigonal bipyramidal SF6 6 Octahedral C. Valence Shell Pairs: Single Bonds and Non-Bonding electron pairs Fill in the table below for the corresponding compounds. Reference the tables provided in the introductory comments for Lab #16 VSEPR Theory. Molecular Formula Number
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Friction Page 1 Lab: Friction William Morris Leo Hayes High School Friction Page 2 Purpose: To investigate the coefficient of friction for a given surface and the effects that factors such as weight‚ surface area and changes to the surface have on the coefficient of friction. Hypothesis: The smaller the amount of normal force (weight)‚ the less friction created and the least surface area and the greaser the surface the less friction is created. With
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PART A: 1. Press the On/Off button to turn on the MeasureNet workstation 2. Press Main Menu‚ then press F2 Temperature‚ next press F1 Temperature vs. Time. 3. Half fill a 150-mL beaker with ice and water. Press calibrate to calibrate the temperature probe. When prompted‚ enter 0.0 *C as the actual temperature of the constant temperature bath (ice water). Press Enter. Insert the temperature probe in the ice water. Swirl the temperature probe until the temperature approaches and stabilizes
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Lab #4 Compromise and Exploit a Vulnerable Microsoft Workstation IT Security: Attack & Defense Course Number: ISSC362 IP address for Windows vulnerable computer: 172.30.0.3 Open Ports on 172.30.0.3: 135/tcp open msrpc Microsoft Windows RPC 139/tcp open netbios-ssn 445/tcp open microsoft-ds Microsoft Windows XP microsoft-ds 1025/tcp open msrpc Microsoft Windows RPC 3389/tcp open microsoft-rdp Microsoft Terminal Service 5000/tcp open upnp Microsoft Windows
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MATERIAL AND METHODS Stability of cell membrane using pH For the lab experiment for testing the stability of beet cell membranes using pH‚ many materials were used as follows. Obtaining a beet we punch out cores‚ using a cork borer. After washing the cores we put each one inside a separate test tube‚ and added a different pH solution in each one. After 3 minutes in these exposure solutions‚ we took the beet out with a dissecting needle. Then transferred each beet to a separate test tube containing
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Helicopter Lab (Print and Due Monday) Problem: If we change the length of a paper helicopter’s wings‚ what length of wing will make the helicopter fall slowest? Hypothesis: If we increase the length of a helicopter’s wings then it wall fall slower because the wings will spin slower. Procedure: Materials: • Scissors • 3 Paperclips • Stop Watch • Ruler (metric) • Helicopter paper template(5cm X18cm) Step by Step: 1.) Gather Materials
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Name Lab‚ Week #1 BALANCE LAB Introduction Several instruments are used for determining the mass of a chemical; these instruments are called “balances.” However‚ different balances have different measurements‚ meaning that some balances are more accurate than others. Moreover‚ there are several techniques that are used or practiced in order to obtain an accurate measurement. The two techniques are direct weighing and weighing by difference. Direct weighing simply means to read the mass
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Lab 3: Enable Windows Active Directory and User Access Controls 1. What are the three fundamental elements of an effective access control solution for information systems? Identification‚ Authentication and Authorization 2. What two access controls can be set up for Windows Server 2003 folder and authentication? Authentication and Access Control 3. If you can browse a file on a Windows network share‚ but are not able to copy it or modify it‚ what type of access controls and permissions are
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Lab 4-B Purpose The purpose of this lab is to test these solutions and see what type of reaction occurs and see if a precipitate or gas forms between any of these reactions. Research 1. Table A Reactants in Aqueous Solutions Predictions (1) MgCl₂(aq) + 2NaOH(aq) Mg(OH)₂(s) + 2NaCl(aq) (2) FeCl₃(aq) + 3NaOH(aq) Fe(OH)₃(s) + 3NaCl(aq) (3) 2KCl(aq) + Na₂SO₄(aq) K₂SO₄(s) + 2NaCl(aq) (4) CaCl₂(aq) + 2AgNO₃(aq) Ca(NO₃)₂(s) + Ag₂Cl(aq) (5) CuSO₄(aq) + Na₃PO₄(aq) Cu₃PO₄(aq) + Na₂SO₄(s) 2. Table B
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