et al Abstract: The purpose of this lab was to determine how light affected photosynthesis‚ specifically the production of O2 bubbles. It was predicted that when the light was more intense the O2 bubble production will be high. Conversely‚ when the light was less intense the O2 bubble production will be lower. Basically the plant that is closer to the light will produce more bubbles than the plant that is placed farther away from the light source. In this lab the independent variable is the light
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Abstract: This report presents the reason why the ocean does not freeze in the winter. Since the ocean consists of salt water‚ an experiment was done to test the effect of freezing on salt water compared to pure water. The experiment was conducted three times in order to obtain accurate results and eliminate errors. In addition to the salt and pure water experiment‚ a variation of this experiment was created to test other options. In the variation experiment the effect of freezing on sugar water
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Bromothymol blue (green) No change No change Blue Red-cabbage extract (purple) Pink No change Green Table 3 includes data collected throughout the process of standardizing the sodium hydroxide solution. Information from all three titrations of sodium hydroxide into KHP is recorded in order to calculate the average molarity of the NaOH solution in the end. Calculations used to derive the numbers in the table will be shown after the table. Table 3. Data collected from three titrations of 0.1M
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Department of biology Faculty of Science and Mathematics Universiti Pendidikan Sultan Idris LABORATORY REPORT SBT 1013: INTRODUCTION TO BIOTECHNOLOGY Semester 4 Sessions 2013/2014 ID NUMBER AND NAME 1. SITI NURFATINI BINTI MOHAMAD ROSLAN (E20131007560) 2.NURHAFIZAH BINTI SAMSUDDIN (E20131007584) 3.MUNIRAH BINTI HARON (E20131007556) 4.NORSYAWANI BINTI SUPIAN (E20131007577) LECTURER : CIK FATIMAH EXPERIMENT NO. : EXPERIMENT NO.1 TITLE : EXTRACTION OF DNA
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Lab Report Acids and Alkalis: Chemistry of Neutralization and Salt Formation Introduction: An acid is a group of chemicals. Acids are positively charged ions‚ they are liquid and are solutions of pure compounds in water. If you want to know if something is an acid‚ you can test it by using litmus paper. Acids will turn litmus paper red‚ whilst alkalis will turn it blue. Alkalis are negatively charged ions and are usually solid. Aim: To find out how much of different acids is needed to neutralize
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mL beaker “one hot‚ one cold”‚ fluorescent circular lamp‚ 2% bicarbonate sodium‚ a hole punch‚ and thermometer using degrees Celsius for water temperature. One-person Prepared specimen plate with 40 hole-punched spinach leaves‚ before mixing it in the 250 ml beaker diluted water containing 2% sodium bi-carbonate‚ that is then poured in the syringe approximately at 20 ml. Did require two people to start when putting solutions into plastic syringe‚ holding it upright to execute oxygen and letting leaves
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Unknown Lab Report April 25th‚ 2006 Introduction The purpose of this lab was to identify two unknown bacteria cultures using various differential tests. The identification of these unknown cultures was accomplished by separating and differentiating possible bacteria based on specific biochemical characteristics. Whether the tests performed identified specific enzymatic reactions or metabolic pathways‚ each was used in a way to help recognize those specifics and identify the unknown cultures
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Alyssa Caparelli Organic Chemistry 12A Professor Alston October 28‚ 2014 Isolation of Chlorophyll and Carotenoid Pigments from Spinach Purpose The purpose of this experiment was to isolate ß-carotene‚ chlorophyll-A‚ and chlorophyll-B from spinach using column chromatography. Spinach was dehydrated using ethanol‚ and the pigments were extracted with dichloromethane. The spinach extracts were dried using CaCl2. Then‚ the solid pigments were run through a column using a non-polar solvent‚ hexane
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fluoride ion concentrations with solutions and volumes that were pre-determined before the initiation of the lab.1 Placed 50uL of the enzyme in each test tube.1 Ran each reaction for the duration of five minutes.1 Quenched each test tube with 250uL of 6M NaOH after five minutes.1 Measured the absorbance of each sample at 405nm and recorded all data.1 Sodium hydroxide is corrosive and an irritant.3 Sodium phosphate is toxic and is a skin and eye irritant.4 Sodium fluoride is corrosive and is a skin
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Joseph Sulaiman Alya Abourezk 4/13/12-4/14/12 Class Action Lab Report Purpose: To determine‚ through observations‚ the identity of substances produced in a chemical reaction. Materials: Safety Goggles Stirring rod Magnesium ribbon Solid CuSO4•H2O Matches Test tubes Copper metal 3M HCl Red and blue litmus strips 0.1M AgNO3 Zinc metal 0.1M Pb(NO3)2 Test tube holder 0.1M KI Bunsen burner 0.1M Na2NO3 Crucible tongs 1.0M NaOH Water (H2O) 0.1M Ca(NO3)2 50mL beaker
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