Chromatography of Commercial Analgesics Chromatography of Commercial Analgesics CHEMISTRY 200L EXPT 4 PAGE 8 - 11 CHEMISTRY 200L EXPT 4 PAGE 8 - 11 Janna Vernice R. Villalon*‚ Christian V. Villanueva‚ Cyd Vincent L. Zamora Department of Chemistry‚ College of Science *Corresponding author; e-mail: janna.villalon@rocketmail.com Abstract In analyzing the chromatography of analgesics‚ thin layer chromatography (TLC) was used. A very thin (micron) film of silica is coated on a glass
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01:52:00 C) 01:53:10 D) 01:54:20 3. What is the time lag (S-P) in hours:minutes:seconds GMT? (See Lab Exercise 1‚ Step 1‚ Question 3) A) 00:02:00 B) 00:03:20 C) 00:03:30 D) 00:04:10 4. What is the distance in kilometers between the seismic station and the epicenter? (See Lab Exercise #1‚ Step 2‚ Question 4) A) 2400 km B) 2600 km C) 2800 km D) 3000 km 5. What is the time lag for noted at the Seattle‚ Washington‚ seismic station? (See Lab Exercise #2‚ Step 1) A) 45 seconds B) 50 seconds
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Continuing Cookie Chronicle – Problem 2 After researching the different forms of business organization‚ Natalie Koebel decides to operate Cookie Creations as a proprietorship. She then starts the process of getting the business running. During the months of November and December 2013‚ the following activities take place: Nov. 12 Natalie cashes her Canada Savings Bonds and receives $980‚ which she deposits in her personal bank account. 12 She opens a bank account under the name “Cookie Creations”
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Unit 4 test Please answer the following questions. You may use your Periodic table and vocab (65 points) Match the following items. (14 points) 1. emitted from a cathode ray tube Bohr 2. discovered the neutron Chadwick 3. discovered the electron JJ 4. postulated the quantum atom nucleus 5. discovered the proton electrons 6. father of atomic theory Dalton 7. location of most of the mass of the atom Bohr 1. unlike charges attract 2. like charges repel
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Problems with Wildlife It is blatantly obvious that the level of wildlife has been decreasing amazingly over the years. Species of animals and plants are rapidly becoming endangered or even extinct. There are many factors that are making this problem a reality. Habitat destruction‚ hunting‚ and pollution are the three major factors that are destroying our wildlife. The destruction of habitat is the greatest of all threats to wildlife‚ whether they’re rich tropical forests‚ mangroves‚
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Lesson 4 1. By default‚ Windows 7 standard users are permitted to install Plug and Play devices only if their drivers are Digitally Signed. 2. The debilitating condition in which files are stored as clusters scattered all over a disk is called Fragmentation. 3. The file system included in Windows 7 that is specifically designed for use on flash drives is called exFAT32. 4. Technically speaking‚ you create partitions on basic disks and volumes on dynamic disks. 5. In Windows 7‚ the
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their best to achieve shareholder’s goal. Due to different interests in shareholders and managers‚ the conflicts always exist between them. An agency problem occurs when the interests of stockholders‚ the board of directors‚ and/or the management of the company are not perfectly aligned or when these entities conflict. EXPLAINATION Agency problem is typically caused by two reasons which are asymmetric information and hidden action. There is no legitimate theoretical or moral objection to those
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Assignment-4 (Chs. 10‚ 12 and 13 : these chapters are marked different in the 7th ed. Chs 12 and 13 of the 6th ed are marked as Chs 13 and 14 in the 7th ed) Due by Midnight of Sunday‚ June 29th‚ 2014 (Dropbox 4): Total 125 points True/False (two points each) Chapter10 1. In an experiment involving matched pairs‚ a sample of 15 pairs of observations is collected. The degree of freedom for the t statistic is 14. true 2. In testing the difference between two means from two independent populations‚
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9063 Then c=264.3 4. The diagram below shows three islands in Florida Bay. You rent a boat and plan to visit each of these remote islands. If you are on island B‚ on what bearing should you navigate to go to island C? B^2=a^2+c^2-2ac Cos B 25=49+36-2(7) (6) cos B 25=85-84 cos B Cos [B= 60/84=0.714 then B=44.4〗 The bearing angle=90-44.4=45.6 NW 5. Use Heron’s formula to find the area of the triangle. Round off to the nearest square feet. a = 5 feet‚ b = 5 feet‚ c = 4 feet. Area=√(s(s-a) (s-b)
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African Problems 2 As it is known‚ human history began in Africa from appearance of first human dated to 3.000.000 years. Nowadays humanity has made a huge progress in social‚ technical‚ scientific spheres. But unfortunately‚ human society has digressed in some cases of social development and there are lots of poor examples. For 3.000.000 year history‚ a human being still has many problems beginning from physical solution of many problems such as fights‚ murders‚ wars ending by many types of discriminations
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