4 DSO I scale 1 paper plate 1 napkin Procedure: 1. Weigh all the regular and DSO on the scale. 2. Record into the data. 3. Find the average of each type of Oreos. 4. Repeat step 2. 5. Scrape off all the filling with a fork. 6. Weigh two of the cookie wafers that have no filling. 7. Use the equation (1 cookie – 2 cookie wafers) for each Oreos to just get the filling. 8. Repeat step 2. 9. Divide the two filling of the Oreos. (DSO cream/Reg. cream) Results (Data): original DS
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Multiple 1‚000‚000‚000‚000‚000‚000 1‚000‚000‚000‚000‚000 1‚000‚000‚000‚000 1‚000‚000‚000 1‚000‚000 1‚000 100 10 1 0.1 0.01 0.001 0.000001 0.000000001 0.000000000001 0.000000000000001 0.000000000000000001 1018 1015 1012 109 106 103 102 101 1 10–1 10–2 10–3 10–6 10–9 10–12 10–15 10–18 Name exa peta tera giga mega kilo hecto deka — deci centi milli micro nano pico femto atto Abbreviation E P T G M k h da — d c m m n p f a Physical Constants Acceleration due to gravity Universal gravitational constant
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Sample Short Lab Report By Charles M Borener Jr April 24‚ 2009 Kinetic Friction Experiment #13 Joe Solution E00123456 Partner - Jane Answers PHY 221 Lab Instructor – Chuck Borener Thursday‚ 11 AM – 1 PM Lecture Instructor – Dr. Jacobs Abstract In this experiment‚ we test factors which effect friction. We pulled a wood block across a surface to determine whether the surface area of the block or the type of surface effects friction. We found that the surface area of the block did not change
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Butane Lab Purpose The purpose of this lab is to determine the molar mass of Butane. Materials 1. funnel 2. thermometer 3. bucket 4. butane lighter 5. tap water 6. graduated cylinder 7. electronic balance Procedure 1. Rinse bucket and fill it ¾ way 2. Rinse glassware 3. Place thermometer in tray 4. Record pressure of Mercury 5. Record temperature
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Bubble Quality Lab Hypothesis: The sugar solution will produce the best quality bubbles because of it’s sticky texture. Procedure: First‚ three cups were labeled as #1‚ #2‚ and #3. Next‚ each cup had one teaspoon of dish detergent and ⅔ cup of water added to them and swirled around to have everything mixed. Cup #2 then had half a teaspoon of table sugar added and cup #3 had half a teaspoon of table salt added to them. After that‚ a straw was dipped into each solution separately‚ and blown through
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Lab 3 – Biodiversity Demonstration 1: Interdependence of Species Table 1: Interdependence of Species Results Round Species Missing (Bead Color and Name) 1 Blue / Humans 2 Red / Flowers 3 Yellow / Bees 4 N/A POST LAB QUESTIONS 1. Explain how the ecosystem was affected by the missing species for each round of the demonstration. a. Round 1 = Without humans then all progress cease to exist and everything will go in reverse. Humans run pretty much everything and if we just eliminated humans then only
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persistent pink or brown color 7. Repeat Steps 1-6 for time intervals of 30‚60‚ 120‚ 180‚ and 360 seconds Test of Catalase Activity 1. Cut 1mL (cm3) of potato and macerate it. 2. Prepare 50mL glass beaker with 10mL of H2O2 3. Place 1mL potato into glass beaker and record results 4. Repeat step 2 5. Place boiled 1mL of boiled potato into 50mL beaker of solution Data KMnO4(mL) | Time(seconds) | | 10s | 30s | 60s | 120s | 180s | 360s | A. Baseline
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Lab: Comparison of Three Isomers of Butanol Pre-lab: 1. Write the general reaction of an alcohol and HCl. 2. What would the solubility be of an alcohol in water. 3. What would the solubility be of an alkyl halide in water? 4. What is the purpose of KMnO4 in the reactions? Safety: Concentrated hydrochloric acid is corrosive and the vapour is very irritating to the respiratory system. Avoid contact with skin‚ eyes‚ clothing‚ and the lab bench. Wear eye protection and a lab apron.
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Biology 20 IB Design Lab Does increasing or decreasing the ph level of a 3% concentration H2O2 (l) solution affect the amount of oxygen released between 15.0ml of the solution and a 5g sample of liver? The reaction is measured by the difference in mass of a balloon that is used to capture the amount of gas released by the catalase enzyme found in liver reacting with a basified 3% H2O2 (l) and an acidified 3% H2O2 (l) . Chemical reactions occur when two or more molecules interact and the molecules
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some of the common measuring devices used in a chemistry laboratory. Determine the volume‚ mass‚ and density of objects and liquids. Time Allocation: Allow 2 hours for this experiment Materials Materials Student provides Label or Box/Bag Qty 1 1 1 1 1 LabPaq provides Auxiliary Supplies BagCK1 © Hands On Labs‚ Inc. 1 1 1 1 1 1 1 1 1 1 1 LabPaq CK-1 Item Description Table salt Piece of string Isopropyl (rubbing) alcohol Tap water Paper‚ 5 cm x 5
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