because it required a greater force to move 2 marble than one marble. The 3rd law showed because if 2 marbles hit the line‚ 2 came off. This is an example of "every action has an equal and opposite reaction. The beads slid from side to Side in the dish. They wanted To stay in one place‚ so they Resisted
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CHEMISTRY I Experiment 12: Avogadro’s number (hand out) Introduction: The objective of this experiment is to determine the value of Avogadro’s number and the mole concept via the use of the monolayer experiment. Experimental data sheet: Attached Calculations: 1. Area of monolayer A= 3.14(8.58 cm)² / 4 A= 231 cm² / 4 A = 57.8 cm² 2. Molecules of stearic acid in monolayer 57.8 cm² x 1molecule = 2.8 x 1016 molecules 2.1 x 10-15 cm²
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Detection of Biological Molecules Introduction: Without carbon‚ nitrogen‚ hydrogen‚ sulfur‚ oxygen and phosphorus‚ life wouldn’t exist. These are the most abundant elements in living organisms. These elements are held together by covalent bonds‚ ionic bonds‚ hydrogen bonds‚ and disulfide bonds. Covalent bonds are especially strong‚ thus‚ are present in monomers‚ the building blocks of life. These monomers combine to make polymers‚ which is a long chain of monomers strung together. Biological
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The affect of temperature on the rate of movement of woodlice Aim: The aim of this experiment is to establish whether a change in temperature affects the rate in which woodlouse move. I measured the rate by timing the woodlouse to move a set distance of 20cm‚ and altered the surrounding temperature by submerging a clear tube in water with different temperatures controlled by a water bath. Research: It is to be believed there over 3000 different species of woodlice‚ a total of 42 species
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The Effectiveness of Common Acne Products against P. acnes Bacteria Kathryn Henshaw Taunton High School Honors Chemistry I Mr. Osowick January 23‚ 2013 Table of Contents Abstract3 Background Research4-9 What is Acne Vulgaris? 4 How does Acne Vulgaris Form?6 How is Acne Vulgaris Treated?8 Purpose10 Hypothesis10 Materials10 Procedure11-14 Data15-16 Results17 Conclusion18-19 Figures20-22 References23-24 Abstract Acne is one of the most common pests to human beings. Although
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solution was added and this was given a further 90 seconds) - Apparatus Materials: - Gloves - Safety goggles - Buffer solution pH 7 - Distilled water - Solution of H2O2 - 0M‚ 0.2M‚ 0.4M‚ 0.6M‚ 0.8M‚ 1M solutions of FeSO4 - Scalpel - Forceps - Petri dish - Balance (±0.01 g) - Stopwatch (±0.01 seconds) - Pipettes - Boiling tube - Two 10 cm3 measuring cylinders (±0.05 cm3) - Delivery tube with cork - Beakers - Thermometer - 100 cm3 gas syringe (±0.50 cm3) - Clamp and stand Procedure: 1. Gather all
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ROBYN STACEY is a well-known Australian photographer who has exhibited large and powerful images both in Australia and overseas. Stacey’s work shows a fascination with the use of history to inform our present. Her interest in archives from museums led to her taxonomy artworks in which she researched and photographed archival repositories from museums in Australia and overseas. The artworks produced from these collections show powerful and striking photographic arrangements. The photographs allow
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CHAPTER I INTRODUCTION Background of the Study Mangrove swamps are forested intertidal ecosystems that occupy sediment-rich sheltered tropical coastal environments. By trapping and stabilizing fine sediments‚ mangroves control the quality of marine coastal waters. Aside from maintaining coastal food webs and populations of animals‚ mangroves have an important role in pollution control through their absorptive capacity for organic pollutants and nutrients‚ and they play an important role in storm
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Potassium Dichromate‚ and Methylene Blue.1 Arantxa Alex Carpio Group 1 Sec. X – 4L March 24‚ 2015 ABSTRACT The effect of molecular weight and time on the rate of diffusion was determined using the agar-water gel test. A petri dish of agar-water gel with three wells was prepared and a prepared solution of each substance was dropped on each well; one with potassium permanganate (KMnO4)‚ the other with potassium dichromate (K2Cr2O7)‚ and the last one with methylene blue. The
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The Effects of a Seed Coat in Seed Germination Mario Monroe INT1 Task 3 The Effects of a Seed Coat in Seed Germination Abstract Seed germination is an important aspect in plants growth and food production. It is therefore it’s of uttermost importance to know the effective ways of seed germination so as to improve food production. This research was therefore prompted by the rising issue of farmers buying low quality and a damaged maize seed from unscrupulous sellers and this has led to deterioration
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