EXPERIMENT 7 - Distillation – Separation of a Mixture Purpose: a) To purify a compound by separating it from a non-volatile or less-volatile material. b) To separate a mixture of two miscible liquids (liquids that mix in all proportions) with different boiling points. Equipment / Materials: large test tubes(3) clamp (1 or 2) ringstand boiling chips test tube rack (1) heating mantle glass adaptor thermometer adaptor 10-mL graduated cylinder condenser (1 or 2) grease 50- mL round bottom flask 50-
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remains constant. A pure substance melts at a precisely defined temperature‚ characteristic of every crystalline substance and dependent only on pressure (though the pressure dependency is generally considered insignificant). Determining the MP is a simple and fast method used in many diverse areas of chemistry to obtain a first impression of the purity of a substance. This is because even small quantities of impurities change the melting point‚ or at least clearly enlarge its melting range. The boiling
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Living in the “Inner City” Exam Date Wed‚ December 4th‚ 2013‚ 8:30 Design For each text‚ there will be 2 multiple choice questions There will be altogether 20 questions‚ corresponding with the 20% evaluation of this exam per correct answer you get one grade point Required Texts Sherene Razack‚ Race‚ Space and the Law (RSL) S. Razack‚ When Place becomes Race (1-17) M. Oikawa‚ Cartographies of Violence (71-98) B. Lawrence‚ Rewriting Histories of the Land (21-46) Eva Mackey‚ The House
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Symbolism of heir. The audience cann relate to Hank and Sarah;s desire to provide a better life for their child than the crad-to-grave money worries characteristic of their ecpceirence in the late 20th century. ld is symbokic‚ we are able toe relate to simple pna more than we can relate to Macbeth‚ epmahise with the character better can understand his decision. Farms didn’t work‚. Educated was not needed Voice-over A sense if amcarabe is created throughout the discoverey scnbe suggesting that
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Simple Diffusion Activity 1: Simulating Simple diffusion 1. What is the molecular weight of Na+? 22.99 or 23 2. What is the molecular weight of Cl-? 35.45 3. Which MWCO dialysis membranes allowed both of these ions through?50‚100‚ 200 4. Which materials diffused from the left beaker to the right beaker? Urea‚ NaCl and glucose diffused 5. Which did not? Why? Albumin was too large to diffuse into the right beaker. Activity 2: Simulating Dialysis 6. What happens to the urea concentration
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When and how did i-mode create new buyer utilities? What is „i-mode´s business model?” The new service as „i-mode” start on 22 February 1999. Initially 67 content providers participated in the new service‚ with sites ranging from banking to Karaoke. Thanks to „i- mode” always and everywhere we can use from informative services‚ the universal bank services‚ stock quotations‚ reservation of tickets. Telephone is guide after cinemas restaurants‚ clubs etc. However the largest popularity have
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Simple Justice Racism The way this book began was profound and saddening. It didn’t begin in the early to mid 1800’s but in the 1950’s. A time of prosperity in America during the baby boom‚ manufacturing jobs and at a time when families could prosper; but not if you were black in South Carolina. Summerton‚ South Carolina in the 1950’s was no larger than 30‚000 plus people and was a majority black population. But that majority didn’t help the black people in this community. The chapters focus
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A THE SIMPLE PENDULUM • General Background: A mass m hanging from a string whose length is L and a pivot point on which this mass is fixed are what a simple pendulum (which was discovered during the 10th century by Ibn Yusuf) consists of. During the 17th century‚ it is developed by some physicist‚ especially by Galileo. When the mass hanging from the string is released with an initial angle‚ it starts to move with a periodic motion. The motion can be approximated as a simple harmonic
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For each of the formulae you used in solving the problem‚ what parameter values (i.e. the inputs to the calculation) did you use to solve the problem? Quiz: Please answer the following questions Q1: How long will it take for $20‚000 to grow to $30‚000 at 8%p.a. simple interest? (in years correct to two decimal places) Q2: Calculate the present value of $10‚000 due to be paid 3 years from now. The interest rate to use in the calculation is i4 40% Q3: Calculate the present value of $10‚000 due to be paid 3 years from now
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the individual and how it has been represented through the two significant texts including‚ free verse book The Simple Gift by Steven Herrick and wordless picture book The Arrival by Shaun Tan. Each one of these texts’ discusses and portrays the idea of being accepted or not being accepted in the environment through different circumstances but in a similar way. The first text is The Simple Gift by Steven Herrick which examines the life of a 16-years-old boy called Billy Luckett‚ who ran away from home
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