Matt R Results & Analysis Part 1: 1.) To determine the density and composition of a penny it must be first weighed on a scale. Find the average mass of multiple pennies from the same year. After weighing it find the volume by placing the pennies into a 50 ml beaker with 15 ml of water. Note the change in volume to obtain the volume of the pennies‚ obtain the average volume‚ and then calculate the density by dividing the mass of the penny by the volume. 2.) To keep measurements accurate and precise
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LAB 12 PERCENTAGE COMPOSITION OF HYDRATES Pre-Lab Questions: See page(s) 1 for calculations Purpose: The purpose of this lab was to learn how to determine the percent of water in a hydrate. Materials: Evaporating dish Ring stand Wire gauze Burner Crucible tongs Triple beam balance Copper(II) sulfate penta-hydrate Spatula Glass stirring rod Distilled water Procedures: See page(s) 1 and 2‚ for procedure steps 1-11 Observations and Data: 1. Mass of evaporating
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Summer season in Bangladesh Bangladesh has a subtropical monsoon weather indicated by wide seasonal different versions in rainfall‚ moderately warm temperatures‚ and high humidity. During summer the sun shines hotly. The heat is terrible. Water goes dry. Ponds‚ canals‚ lakes and small rivers go dry. There is scarcity of water everywhere. The earth gets parched. People sweat at the slightest work and become tired and thirsty. People cannot work at ease. Summer is also the season of various fruits
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My mother I am a country girl‚ and my mother is a country woman. She and my father are both junior-middle school graduates. Partly because of this‚ I‚ as their only daughter‚ bear their high expectations of me becoming a university graduate. Besides‚ I think their big hopes on me also come from some historical reasons---- our neighbor‚ my grandpa’s younger brother’s family‚ have been mean to us. The second family in our neighborhood to build a two-story brick house‚ they are far better off than
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Percent Composition and Molecular Formula Worksheet 1. What’s the empirical formula of a molecule containing 65.5% carbon‚ 5.5% hydrogen‚ and 29.0% oxygen? 2. If the molar mass of the compound in problem 1 is 110 grams/mole‚ what’s the molecular formula? 3. What’s the empirical formula of a molecule containing 18.7% lithium‚ 16.3% carbon‚ and 65.0% oxygen? 4. If the molar mass of the compound in problem 3 is 73.8 grams/mole‚ what’s the molecular formula? Write the molecular formulas
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Andrew Quarless ENGL 202-D Leslie Robertson Mateer Spring 2009 Business Communication Essentials Practice Your Knowledge (pgs. 94-95‚ nos.1-47) The “You” Attitude: 1. We request that you have the order form supplied in the back of our catalog. So that your order is processed properly‚ please complete the order form located in the back of our catalog. 2. We insist that you always bring your credit card to the store. Having a credit card will most
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I couldn’t sleep. I had woken in the middle of the night the day after her death. I saw Mum sitting at the dinner table. Her face was an ashen grey with worry and her lips were set in a thin line as if she was struggling not to cry. I started to get dressed very slowly‚ pulling a brush through my hair. The cuffs of my cosy cardigan suddenly felt itchy and irritated against my skin. As I reached to get my hairspray‚ I knocked a photo off. It landed upside down on the floor. I bent down to
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“Breaking Night” (Murray‚ 2010) At the age of 16‚ Liz Murray was homeless. Born to two parents who were both drug addicts in the 1980’s‚ Liz and her sister found themselves caring for one another. Living in the Bronx gave Liz the skills to steal. Shoplifting food for her and her sister were a necessity. Later she would discover that the self-help books she lifted and read would attribute to her success in the future. Liz was 15 when her mother told her she was HIV positive. Liz found herself
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Online education is emerging as a powerful and popular trend for college students - especially those living in rural areas. It is easy to see the benefits of taking classes at home. There is no money to spend on gas and vehicle maintenance. It is generally considered safer to stay at home than to venture out onto the roads in inclement weather‚ not to mention other drivers with road rage. There is no need to spend money on a special wardrobe for school. The negatives of online courses include far
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Stradlater’s composition is supposed to be about a room in a house that can be described. Holden decides to write about his dead brother’s baseball glove because he is deeply depressed about his death and has not come to terms with his grief over the loss of his brother. Allie’s glove‚ with the green writing on it‚ is symbolic of isolation. Allie felt separate from his teammates while playing baseball. Instead of paying attention to the game‚ he would write poetry on his glove while playing the outfield
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