PROCEDURE Part I Setting Up Experiment 2D: Separation of a mixture by Paper Chromatography Objectives: 1. To assemble and operate a paper chromatography apparatus 2. To study and the significance of Rf values 3. To test various food colorings and to calculate their Rf values 4. To compare measured Rf values with standard Rf values 5. To separate mixtures of food coloring into their components 6. To identify the components of mixtures by means of their Rf values Materials / Apparatus: See “Health
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Gale Hawthorne versus Peeta Mellark: A Look at Peeta Mellark and Gale Hawthorne By Jay Rogers-Giabbai Instructor Ms. Melinda Hughes English 1302.03 October 21‚ 2014 Rogers-Giabbai 1 Jay Rogers-Giabbai MeLinda Hughes English 1302. 03 October 21‚ 2014 Gale Hawthorne versus Peeta Mellark: A Look at Peeta Mellark and Gale Hawthorne “May the odds be forever in your favor‚” were the last words she heard before being sent away to the Capitols entertainment battlefield. “…Quote from Caesar Flickerman
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Parachute Experiment Aim: To investigate the effect of surface area on a performance (more the amount of a parachute better the performance) of a parachute. Hypothesis- More the amount of holes in a parachute‚ faster the rate of the fall. Variables: Dependent variable- The time it takes for the parachute to reach the ground. Control variables:Mass > Adding or subtracting mass from the load. > Clay can be molded around the load to increase mass. > Parts of the load can be cut off to decrease the
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Tuskegee Syphilis experiment is the most infamous clinical study conducted in the United States between 1932 -1972. The study of natural progression of untreated syphilis in rural Africa American men‚ led to a forty year study which was controversial for reasons related to ethical standards; researchers knowingly failed to treat patients after the 1940s validation of penicillin. The patients with syphilis were never told they had it‚ were part of a case study‚ could leave the experiment at any given
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If one goes out before we wake up‚ we will get two more of the same type of battery and watch it during the day. Variables Our variable is the different brand of batteries. The controlled condition is the same type of flashlights. Results Our experiment showed that Rayovac outlasted all of the other batteries we tested by at more than two hours. The Eveready battery‚ which is a regular‚ non-alkaline battery‚ lasted only 6 hours and 35 minutes. The Duracell lasted 15 hours. The Energizer lasted
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How would you devise a social science experiment? In this essay I am going to explain and demonstrate how I would devise a social science experiment‚ I have chosen is ’How are tasks divided up between men and women in the home using married‚ childless couples’. My hypothesis is that; ’although feminism has advanced massively‚ women still take a larger role in the domestic upkeep of the home than their male counterparts regardless of whether one or both subjects work.’ I will outline how the data
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In many of Nathaniel Hawthorne’s short stories‚ he creates characters with either a malicious or evil feature to relay to the reader a more allegorical meaning. In the story " Rapaccinni’s Daughter" he uses Beatrice as a carrier of a deadly poison. Beatrice’s relationship with Giovanni is the main plot of the story. To Giovanni‚ she is the woman who represents death and enslaves him but in reality she is not deliberately harmful to him. She becomes a focus of Giovannis fantasies‚ fears‚ and desires
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Purpose This experiment shows how different concentrations of acids and bases in a solution affect its pH level. When acids and bases are combined in a solution‚ they neutralize each other. This means that depending on the concentration of both acids and bases in a solution‚ the pH will vary. A neutral pH level is 7; anything below that level is known as an acidic solution‚ while anything above is known as a basic solution. To find out the pH‚ the solutions will be diluted and tested with different
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Kevin Doherty Experimenting with Plant Growth Team Rocket Science Introduction: The purpose of the experiment was to establish whether the concentration of Schultz fertilizer that was added to the radish seeds effects the speed of growth during the six-week time frame of the study. The major variables with this study are proficient communications among the team‚ the seeds‚ soil‚ water concentration‚ fertilizer‚ light exposure‚ temperature of the room‚ consistency of following watering (watering
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of the stories or find connections between them. This assignment has helped me discover the instances and similarity in the writings “Letter: the first voyage” (1493) by Columbus and “Young Goodman Brown” (New England magazine‚1835) by Nathaniel Hawthorne. Even though the stories were written in different centuries and different context they form together to exemplify the connecting theme of discovery. Whether it is the discovery
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