President George Washington - Fast Facts

President George Washington - Fast Facts George Washington was the only president to be unanimously elected to the presidency. He had been a hero during the American Revolution and was made the president of the Constitutional Convention. He set many precedents during his time in office that still stand to this day. He provided a blueprint of how the president should act and what role he should take. Here is a quick list of fast facts for George Washington. You can also learn more about this great man with: George Washington biographyTop 10 Things to Know About George Washington Fast Facts: George Washington Birth: February 22, 1732Death: December 14, 1799Known for: Commander-in-Chief of the Continental Army, Founding Father, First President of the U.S.Number of Terms Elected: 2 TermsTerm of Office: April 30, 1789-March 3, 1797Spouse: Martha Dandridge CustisNickname: Father of Our CountryFamous Quote: I walk on untrodden ground. There is scarcely any part of my conduct which may not hereafter be drawn into precedent. Additional George Washington Quotes. Did George Washington chop down a cherry tree and tell his father the truth? Answer:Â  As far as we know, no cherry trees fell victim to Washingtons rapacious ax. In fact, Washingtons biographer, Mason Weems, wrote a book called The Life of Washington shortly after his death where he created this myth as a way to show Washingtons honesty. Major Events While in Office: Elected to first term with a unanimous electoral vote (1789)First United States census (1790)District of Columbia established (1791)Bill of Rights ratified (1791)Proclamation of Neutrality (1793)Whiskey Rebellion (1794)Jays Treaty (1795)Pinckneys Treaty (1796)Farewell Address (1796) States Entering Union While in Office: Vermont (1791)Kentucky (1792)Tennessee (1796) Related George Washington Resources: These additional resources on George Washington can provide you with further information about the president and his times. George Washington Biography: Take a more in depth look at the first president of the United States through this biography. Youll learn about his childhood, family, early and military career, and events of his administration. Revolutionary War: The debate over the Revolutionary War as a true revolution will not be resolved. However, without this struggle America might still be part of the British Empire. Find out about the people, places and events that shaped the revolution. Chart of Presidents and Vice Presidents: This informative chart gives quick reference information on the Presidents, Vice-Presidents, their terms of office and their political parties. More on the Presidents of the United States: This informative chart gives quick reference information on the Presidents, Vice-Presidents, their terms of office and their political parties.

How to Make Easy, DIY Rochelle Salt

How to Make Easy, DIY Rochelle Salt Rochelle salt or potassium sodium tartrate is an interesting chemical that is used to grow large single crystals, which are attractive and interesting, but also may be used as transducers in microphones and gramophone pickups. The chemical is used as a food additive to contribute a salty, cooling taste. It is an ingredient in useful chemistry reagents, such  as Fehlings solution and Biuret reagent. Unless you work in a lab, you probably dont have this chemical lying around, but you can make it yourself in your own kitchen. Rochelle Salt Ingredients Cream of TartarWashing Soda or Sodium Carbonate (which you can get by heating baking soda or sodium bicarbonate in a 275 °F oven for an hour) Instructions Heat a mixture of about 80 grams cream of tartar in 100 milliliters of water to a boil in a saucepan.Slowly stir in sodium carbonate. The solution will bubble after each addition. Continue adding sodium carbonate until no more bubbles form.Chill this solution in the refrigerator. Crystalline Rochelle salt will form on the bottom of the pan.Remove the Rochelle salt. If you redissolve it in a small amount of clean water, you can use this material to grow single crystals. The key to growing Rochelle salt crystals is to use the minimum amount of water needed to dissolve the solid. Use boiling water to increase the solubility of the salt. You may wish to use a seed crystal to stimulate growth on a single crystal rather than throughout the container. Commercial Preparation of Rochelle Salt Commercial preparation of Rochelle salt is similar to how its made at home or in a small lab, but pH is carefully controlled and impurities are removed to ensure product purity. The process starts with potassium hydrogen tartrate (cream of tartar) that has a tartaric acid content of at least 68 percent. The solid is either dissolved in liquid from a previous batch or in water. Hot caustic soda is introduced to attain a pH value of 8, which also causes a saponification reaction. The resulting solution is decolorized using activated charcoal. Purification involves mechanical filtration and centrifugation. The salt is heated in a furnace to drive off any water before being packaged. Persons interested in preparing their own Rochelle salt and using it for crystal growth may wish to adopt some of the purification methods used in commercial production. This is because cream of tartar sold as a kitchen ingredient may contain other compounds (e.g., to prevent caking). Passing the liquid through a filter medium, such as filter paper or even a coffee filter, should remove most of the impurities and allow for good crystal growth. Rochelle Salt Chemical Data IUPAC Name: Sodium potassium L()-tartrate tetrahydrateAlso Known As: Rochelle salt, Seignettes salt, E337CAS Number: 304-59-6Chemical Formula: KNaC4H4O6 ·4H2OMolar Mass: 282.1 g/molAppearance: Colorless, odorless monoclinic needlesDensity: 1.79 g/cm ³Melting Point: 75  Ã‚ °C (167  Ã‚ °F; 348  K)Boiling Point: 220  Ã‚ °C (428  Ã‚ °F; 493  K)  Solubility: 26 g / 100 mL (0 â„Æ'); 66 g / 100 mL (26 â„Æ')Crystal Structure: Orthorhombic Rochelle Salt and Piezoelectricity Sir David Brewster demonstrated piezoelectricity using Rochelle salt in 1824. He named the effect pyroelectricity. Pyroelectricity is a property of some crystals characterized by natural electrical polarization. In other words, a pyroelectric material can generate a temporary voltage when heated or cooled. While Brewster named the effect, it was first referenced by the Greek philosopher Theophrastus (c. 314 BC) in reference to the ability of tourmaline to attract straw or sawdust when heated. Sources Brewster, David (1824). Observations of the pyro-electricity of minerals. The Edinburgh Journal of Science. 1: 208–215.Fieser, L. F.; Fieser, M. (1967). Reagents for Organic Synthesis, Vol.1. Wiley: New York. p. 983.Kassaian, Jean-Maurice (2007). Tartaric Acid. Ullmanns Encyclopedia of Industrial Chemistry (7th ed.). Wiley. doi:10.1002/14356007.a26_163Lide, David R., ed. (2010). CRC Handbook of Chemistry and Physics (90th ed.). CRC Press, pp. 4–83.Newnham, R.E.; Cross, L. Eric (November 2005). Ferroelectricity: The Foundation of a Field from Form to Function. MRS Bulletin. 30: 845–846. doi:10.1557/mrs2005.272

Real Data Essay Example | Topics and Well Written Essays - 750 words

Real Data - Essay Example The data gathered can be used to perform a number of operations such as mean, standard deviation, variance, correlation etc. Therefore it is safe to say that real data makes it possible to make quantitative classifications. That is why we can say that real data makes it possible to run statistical analysis. The research has been carried out on the results of 2008 American Presidential Elections. The Exhibit 1 shows actual results of elections. The tables are divided according to percentage lead of each president according to states. The data in Exhibit 2 shows pre election polls for each candidate. The data in Exhibit 2 two has been divided according to agencies which had delivered results or conduction these pre election polls. Column D in Exhibit 2 reflects leads to each respective president in states of polls. The data presented is real in nature for Exhibit 2. This is because the format is percentages of actual responses received from the public. Exhibit 1 also shows actual historical data as the responses are shows as percentage of total votes received by each presidential candidate. In column E of exhibit 2 we have prepared another category denoted by numbers. This is a better way to convert real scale to nominal scale and then convert it to percentage to get a solution. The number ‘2’ represents a tie, ‘1’ lead of Obama and ‘0’ lead of McCain. If we calculate the percentage of ‘1’ to the entire population we can calculate how many polls considered Obama to win the elections. The percentage of polls that showed Obama as the winner were 71% where as only 10% predicted a tie of votes. This shows another quality of nominal data that it has to be converted into percentages to reach an analysis. The presidential elections did show a victory for president Obama which reveals that analysis using real data was successful in predicting election results. Nominal data can lead to only qualitative