For the unknown light source‚ it had almost every color‚ so it might have been be mercury because they have similar color beams and their color from the naked eye appeared as purple‚ which mercury‚ a light blue‚ is very close to in terms of it’s color on the spectrum. For the unknown flame crystals‚ it may NH4+ because the colors that appeared are very similar to the crystals. Next‚ chemicals have to be heated in the flame for the color to emit because heat adds energy to the substance making the
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Cathy Do Professor Wurzbacher ENGL 2305 April 19‚ 2015 The Meaning of “Home” in Love Medicine and The Book of Unknown Americans Home is a word that has an emotional feel to it. Home can mean when we are talking about where we belong‚ a place be need‚ somewhere to feel safe‚ and someplace to be loved or to love. Some may say that home is wherever family is or where you loved ones are. Home can be seen as a physical location like the house you live in or general area you live in. Home can also be
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"The Unknown Southern Land" Even in medieval times there were stories about a large continent in the Southerh Hemisphere. But Europeans had never seen it. They wondered what it was like and whether it inhabited. They called this land terra australis incognita 1 or «the unknown souther land» – Australia. Nowdays when people speak of Australia they can mean three things: 1) Australia as a continent; 2) Australia as an island and 3) Australia as an indenendent country. Australia
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Lillian Zhang AP Chemistry 3rd Period Formula of an Unknown Hydrate The purpose of the Formula of an Unknown Hydrate lab is to determine the weight percentage of H2O hydrated to an unknown salt and the empirical formula for the hydrated salt. To do this‚ a massed amount of the hydrate is heated over either a hot plate or Bunsen burner. This causes the water to be removed‚ leaving the anhydrous salt behind in the dish. The mass of the anhydrous salt‚ now with the absence of water‚ is less than
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Antibiotic Resistance in Bacteria For about 50 years‚ antibiotics have been the answer to many bacterial infections. Antibiotics are chemical substances that are secreted by living things. Doctors prescribed these medicines to cure many diseases. During World War II‚ it treated one of the biggest killers during wartime - infected wounds. It was the beginning of the antibiotic era. But just when antibiotics were being mass produced‚ bacteria started to evolve and became resistant to these medicines
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The Tomb of the Unknown Soldier in the Arlington National Cemetery contains the remains of American soldiers who fought in World War I‚ World War II‚ the Korean War‚ and the Vietnam War that cannot be identified. They sacrificed their lives and helped change the lives of people then and now. When our class visits Washington‚ D.C‚ it will be important for us to be a positive and sophisticated group of 8th graders. That’s important because we want to represent our state and country for tourists
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“Fear is the most potent weapon‚” said Faraaz Kazi. Fear of the unknown and fascination of death torments the minds of the boys and causes a big split of the group during the middle of the novel. In the novel Lord of the Flies‚ William Golding uses fear and death to threaten the boys as fear becomes paralyzing and unconquerable by the realization that the only thing the boys have to fear is fear itself. In the very beginning‚ the beast was something that only existed in the boys’ minds and practically
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Lab Report # 11 By: Andrew Hoitt CHEM 105 Lab 11/29/2012 Lab # 11 – Acid - Base Titration Introduction: The purpose of this lab is to determine the molarity (M) of an unknown HCl solution. A NaOH solution will be made and its molarity calculated. A sample of the NaOH solution will be titrated against the unknown HCl solution to calculated the volume needed to neutralize it. With these volumes the unknown molarity can be calculated. Theory: Solutions
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Titration is a method used to help determine the concentration of an unknown solution (the analyte) by using a solution of known concentration (the titrant).1 In medicine‚ titration helps doctors determine unknown concentrations of substances in the blood or urine‚ and it is useful in determining the proper dosage of medication. Titration can determine fat and water contents‚ and unknown concentrations of vitamins. With food‚ titration can be used to determine whether cheese or wine is adequately
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of satire lies in The Unknown Citizen by W. H. Auden. It is a dark satire about what can possibly happen if political and bureaucratic principles corrode the creative and revolutionary spirit of the individual. This poem ridicules the fact that government‚ or the people in control of the citizens of the US‚ know‚ or could find out anything and everything about a person. This creates the idea that people are reduced to a number‚ or a statistic‚ not a person. In The Unknown Citizen‚ the State or the
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