The use of positive and negative controls to determine the macromolecules present in an unknown solution Course # 6130‚ Wednesday‚ 7-10 PM‚ B2-151 Lab performed: September 21st‚ 2011 INTRODUCTION Every living thing is dependent on large complex molecules‚ known as macromolecules. The objective of this lab was to correctly identify which macromolecules the unknown solution was comprised of using various substances as experimental controls. There are four major types of biological macromolecules
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DETERMINING THE EQUIVALENT MASS AND DISSOCIATION CONSTANT OF AN UNKNOWN WEAK ACID BY TITRIMETRY INTRODUCTION Acids are substances that donate hydrogen ions and bases are substances that accept hydrogen ions. Acids and bases react with each other by transferring hydrogen ions. One way to distinguish an acid is by its equivalent mass‚ which is the number of grams of the acid needed to transfer one mole of hydrogen ion to a base. For a monoprotic acid‚ which only transfers one hydrogen ion‚ its
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The fear of the unknown is a common Gothic theme that is used to create fear and uncertainty in the responder. This is achieved through the use of a number of different techniques and conventions. The fear of the unknown is expressed through dark‚ uncertain and mysterious circumstances cause responders to feel vulnerable and fearful. In Bram Stoker’s Dracula the overpowering force of the sublime‚ the prominence of religion‚ death and use of darkness accompanied by typical Gothic techniques evoke
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Part I: Density of Unknown Liquid Trial 1 Trial 2 Trial 3 Mass of Empty 10 mL graduated cylinder (grams) 25.55 25.56 25.55 Volume of liquid (milliliters) 8.8 8.65 8.5 Mass of graduated cylinder and liquid (grams) 30.65 30.62 30.565 Part II: Density of Irregular-Shaped Solid Mass of solid (grams) 39.537 38.515 40.975 Volume of water (milliliters) 50.01 49.9 52.4 Volume of water and solid (milliliters) 54.9 54 57 Part III: Density of Regular-Shaped
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curcas Seed Fats and Oil and Identification and Characterization of Unknown Oil Jose G. Intano‚ Jr. and Niescee Eiscene Talaman University of the Philippines Visayas Miagao‚ Iloilo xdvm_apollo469@yahoo.com‚ messyisnessy@gmail.com Abstract The experiment had the objectives of extracting fats and oil from plant sample using 3:2 hexane-isopropanol solvent through Soxhlet method and of identifying and characterizing unknown oil sample using different chemical analyses. It was divided into
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Similarities in The Epic of Gilgamesh and SiddharthaAs portrayed by an unknown author and Herman HesseTwo people who lived in very different times can still share the same beliefs and journeys to find the meaning of life. That is the case with Herman Hesses Siddhartha and the Babylonian text The Epic of Gilgamesh. The protagonists who live in very different times; Siddhartha lived around 625 BCE and Gilgamesh in 2700 BCE‚ but they follow the same journey to understand themselves and life. Siddhartha
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Similarities in The_ Epic of Gilgamesh_ and Siddhartha As portrayed by an unknown author and Herman Hesse Both Siddhartha and Gilgamesh believe in themselves‚ they do not let others define them or make decisions for them. Siddhartha demonstrates that he has strong will from the very beginning of the novel. He is taught by the Samana even though the teachings he received up to this point in his life say that the Samana’s wayis the wrong religion. “It is not fitting for a Brahmin to speak angry
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Ally Shrader Movie Review: Freedom Writers Freedom Writers begins with Eva‚ a Hispanic just trying to get by in life‚ lay down the lifestyle they are used to. Hatred fills their streets and not even home is a safe haven. Hilary Swank assumes the role of Erin Gruwell who is a teacher new to Woodrow Wilson High. Woodrow Wilson High School was once one of the highest achieving high schools in the area yet with the new integration plans the test scores and achievement levels have dropped severely
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The quote I chose from from page 97 was “We remember the kindness more than ever‚ knowing that our relatives who immigrated to this country after the Iranian revolution did not encounter the same America.” (Firoozeh Dumas page 92) The reason I chose this quote is because It is a very important detail from the story. In this quote she is talking about how much kindness her and her family received before the Iranian Revolution and it shows how much how racist the country became after it. This excerpt
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analyzing an unknown Group 1 metal carbonate‚ M2CO3. There are 3 main reactions in this lab: 1. Equation 1: M2CO3 (s) → 2M+ (aq) + CO32- (aq) 2. Equation 2: Ca2+ (aq) + CO32-(aq) → CaCO3 (s) 3. Equation 3: CaCl2 (aq) + M2CO3→ CaCO3 (s) + 2MCl (aq) The precipitated calcium carbonate is then filtered‚ dried‚ and weighed. The moles of calcium carbonate‚ CaCO3‚ are equal to the moles of Group 1 metal carbonate‚ M2CO3‚ added to the original solution. Dividing the mass of the unknown carbonate
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