The purpose of this lab is to determine an accurate time when the ice completely melts and the water starts to boil. The problem is which type of temperature change will result from heating ice to liquid‚ then boil (steam)? What will happen to the water after the boil? I hypothesise the water heats ice to liquid and then goes to simmer and boil. The independent variable is the hot plate changed to a burner itself. The dependent variable is what we are measuring is the time. The steps in
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could be due to volatility of the product. The experiment required several transferring methods causing the products to be exposed to air and allowing evaporation when it was not covered. The literature boiling point for 4-methylcyclohexene is 101-102 °C; however‚ the observed boiling point in this experiment was 91-98 °C. This is not too much of a difference resulting in the purity of the product being fairly pure. Furthermore‚ the observed boiling point was more than likely lower than the literature
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and inform readers with her literary work‚ telling of a black woman’s scientific subjugation in and throughout the 21st century. The opportunity to read and analyze “The Immortal Life of Henrietta Lacks” proved to be a valuable assignment in English 102. Nonfiction tells of real-world situations‚ and thus provides readers with data and evidence to support any stance they take on an argument. “Are leaders more effective when they are willing to compromise?” This was the essay prompt I was given on
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was … a mighty nice house too. [He] hadn’t seen no house out in the country before that was so nice and had so much style” (102). Huck is awestruck by the Grangerford’s home‚ repeating details unnecessarily. Each room and its furniture are detailed by Huck‚ going on for multiple pages‚ exempt of dialogue. Huck also dissects Emmeline’s multiple paintings‚ capturing even the minute details‚ “...and very wee black slippers‚ like a chisel‚ and she was leaning pensive on a tombstone on her right elbow..
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Bio 111-102 Homework #1‚ Lab 1 assignment My group examined the correlation between standing height and leg length in centimeters for ten of our classmates. Our supposition was that there would be a direct relationship and similarity between standing height in centimeters and leg length in centimeters. Therefore‚ our hypothesis was‚ if leg length increases‚ then standing height will also increase. 1) The steps for the scientific method are: • An observation is made • A question
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pull ups and other strenuous calisthenics. Testing is more demanding for the younger and more potent bodies‚ and is harder to complete. For example‚ young men‚ ages 20-29‚ entering police departments in Illinois are expected to do 38 sit-ups in one minute‚ while the men‚ age 50-59‚ are expected to only complete 24. Younger men are expected to bench press nearly 100% of their own body weight. This factor comes into key for lifting bodies; say out of dangerous situations‚ while older men are expected
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The Cold War was fought without any physical conflicts‚ taking place approximately between the years 1950 and 1990‚ over the United States of America’s and the Union of Soviet Socialist Republics’ conflicting ideologies – capitalism and communism. However‚ it didn’t arise because of what the United States or the Soviet Union actually did. Instead‚ it arose because of what each side was afraid the other might do. Joseph Stalin insisted on Soviet control of Eastern Europe to serve as a buffering zone
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Effect of Temperature on Salt Diffusion Rates and it’s Relation to the Human Body Hypothesis: Ordinary table salt is known to dissolve easily in water. Dissolving or diffusion is the spreading of particles in another substance. This is seen when smoke from a chimney diffuses in the air around it‚ or when dropping coloring in water. When NaCl‚ sodium chloride‚ or otherwise known as ordinary table salt is combined with water the separate salt and water molecules will be attracted to each other
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calculated was 16.0 and the highest BMI calculated was 70. Therefore the range for the BMI is 54. And the mean BMI for the class was 24.1. The highest pulse rate measured was 120 bpm (beats per minute) and the lowest was 60 bpm (beats per minute). So the range of the heart rate for the class is 60 bpm (beats per minute). In our class the highest percentage of body fat was 43.7 % and the lowest percentage of body fat was 8.1 %. Consequently the range of the percentage of body fat is 35.6%. Discussion:
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M10/5/MATHL/HP2/ENG/TZ1/XX/M+ MARKSCHEME May 2010 MATHEMATICS Higher Level Paper 2 Samples to team leaders Everything (marks‚ scripts etc) to IB Cardiff 13 pages June 8 2010 June 15 2010 –2– M10/5/MATHL/HP2/ENG/TZ1/XX/M+ This markscheme is confidential and for the exclusive use of examiners in this examination session. It is the property of the International Baccalaureate and must not be reproduced or distributed to any other person without the authorization of IB Cardiff. –3– M10/5/MATHL/HP2/ENG/TZ1/XX/M+
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