LAB OF ENTHALPY CHANGE IN COMBUSTION Objective: Determine the Enthalpy change of combustion ΔHc of three different alcohols. Methanol‚ Ethanol and Isopropilic acid. Procedure: 1. Fill the spirit micro burner with Ethanol and weight it 2. Pour 100 cm3 of water into the aluminum cup 3. Arrange the cup a short distance over the micro burner 4. Measure the temperature of water 5. When the temperature of the water has risen by 10°C‚ record the temperature. 6. Reweight
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Lab Report Abstract: The purpose of this lab was to see how magnesium reacts with oxygen. This reaction must be forced with heat. As magnesium changes to magnesium oxide the mass increased. Procedure: 1. Set up the stand and bunsen burne. 2. Go to crucible heat oven to obtain a crucible. 3. Weigh the crucible and lids mass. 4. Break up the magnesium ribbon on the crucible and weigh the mass of the magnesium‚ crucible‚ and lid. 5. Place the crucible on the ring stand over the flame. Allow
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department Data security – Lab # 1 Lab Description Set-UID is an important security mechanism in Unix operating systems. When a Set-UID program is run‚ it assumes the owner’s privileges. For example‚ if the program’s owner is root‚ then when anyone runs this program‚ the program gains the root’s privileges during its execution. Set-UID allows us to do many interesting things‚ but unfortunately‚ it is also the culprit of many bad things. Therefore‚ the objective of this lab is two-fold: • Appreciate
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Back Laboratory Program SAFETY IN THE CHEMISTRY LABORATORY 786 Pre-Lab Extraction and Filtration 790 1-1 Mixture Separation 792 1-2 Water Purification 794 3-1 Conservation of Mass 798 4-1 Flame Tests 801 Pre-Lab Gravimetric Analysis 828 13-1 Separation of Pen Inks by Paper Chromatography 830 13-2 Colorimetry and Molarity 834 14-1 Testing Water 838 804 7-1 Separation of Salts by Fractional Crystallization 806 7-2 Naming Ionic
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Taylor Hill Lab 6: Enzymes Purpose: The purpose of this lab is to test for enzyme activity‚ look at enzyme specificity‚ and how temperature affects enzyme activity. Hypothesis: I believe that the room temperature activity will produce the most activity. Materials: 3% hydrogen peroxide‚ a household blender‚ potatoes (3 medium size potatoes‚ that are peeled and quartered)‚ tap water‚ 8 test tubes‚ 8 transfer pipets‚ sugar packets‚ salt‚ a small saucepan‚ a refrigerator with a freezer‚ stove
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Julie Nguyen Equilibrium Lab 4-28-14 I. Purpose To study the affect of temperature & concentration changes on systems in equilibrium II. Safety Wear apron Wear goggles Do not spill chemicals Clean up after use Wash hands Chemicals are TOXIC (by Britney Spears) III. Procedure A. Iron-thiocyanate equilibrium Pipet .3mL of 1 M iron (III) nitrate and .3 mL of 1 M ammonium thiocyanate. into clean 250 mL beaker. Add 75 mL of DS water. Mix well. Divide the solution into equal
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Physical and Chemical Change Objective: Recognize and distinguish between chemical and physical changes. Materials: - lab balance - microspatula - lab burner - dropper pipet - 5 test tubes - mortar and pestle - test tube rack - magnet - test tube holder - insulating pad - watch glass - safety goggles - glass square - lab apron or coat - copper sulfate pentahydrate - iron fillings - sodium chloride - magnesium ribbon - hydrochloric acid - paper
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MACROMOLECULS LAB: What are the mystery powders? Period: 4 Asia Enoch Introduction: A carbohydrate is an immediate form of energy in your body. Monomers is smaller than a polymer. For carbohydrate the monomer is sugar and the polymer is a polysaccharides. Carbohydrates are important to our body because we need to use energy. The purpose of this lab is to figure which one is the monomer and which one is the polymer. Hypothesis: If I place two drops of iodine into the mystery powder‚ it
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Introduction The purpose of this lab was to test different antacids‚ to find out which would be the most effective to take. Stomach acid problems come from a overproduction‚ and build up of gastric acid (HCl). In order to determine which antacid is the more effective‚ four different brands of antacids were chosen‚ and tested. The purpose of an antacid is to balance out the pH inside a person’s stomach. PH is the measurement of molar concentration of hydrogen ions that are present in the solution
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island (Wallace). Materials The materials required for this experiment are a computer with internet connection and access to the Evolution Lab‚ which can be located in the BIO/101 student website. Procedures To begin this experiment‚ go to the Evolution Lab located with the University of Phoenix student website. Once at the lab’s page‚ click Start Lab. This will take you to an applet to view and change the inputs for variables. For this experiment‚ the variable inputs on Darwin Island will be
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