this lab is to separate a mixture of benzoic acid from acetanilide. Procedure: Obtain an unknown sample from instructor. The mixture is weighed out and place in a 125mL flask. 25 mL of methylene chloride was added to the mixture. Next the required KOH is added into the mixture‚ and refer to p. 117 from Wilcox &Wilcox.. The exception to this procedure is the use of a rotary evaporator instead of simple distillation. Data: Mass of Mixture | 3.9591 | Mass of Benzoic Acid | 1.204 g | Mass
Premium Distillation Caffeine
on entertainment outlets to check drug abuse [Online]. Malaysia: The Star. Retrieved from: http://thestar.com.my/news/story.asp?file=/2006/2/21/nation/13450822&sec=nation&focus=1 [Accessed 1st November 2012]. Jesjeet Singh Gill‚ Rusdi Abdul Rashid‚ Koh Ong Hui (2010) HISTORY OF ILLICIT DRUG USE IN MALAYSIA – A REVIEW [Online]. Malaysia: Department of Psychological Medicine‚ Faculty of Medicine‚ University Malaya‚ Kuala Lumpur‚ Malaysia. Retrieved from: http://www.ejass.org/index.php/ejass/article/viewFile/6/6
Premium Drug addiction Addiction
Test #2 ANSWERS CHM 101 Part I Multiple Choice (2 points each) 1. Which element is most likely to form three covalent bonds? A) C B) Si C) P D) S E) Se 2. A chemical bond formed when two atoms share two pairs of electrons is a ________ bond; it is best described as ________. A) double; covalent B) double; ionic C) single; covalent D) single; ionic E) triple; covalent 3. Which property could describe a covalent compound? A) It conducts electricity when melted. B) Has a low boiling
Premium Covalent bond Atom Chemical bond
years. Thomas Scott later helped to finance some of Gan’s early business ventures‚ one of which was to supply labour and transport to the Tanjong Pagar Dock Company which helped Gan to make most of his personal fortunes. Gan married his first wife‚ Koh Chwee Neo‚ at the age of eighteen and in 1859 adopted his first son‚ Gan Tiang Tock‚ who was an important partner in the building of his fortune. He had in total five wives‚ seven sons and two daughters. However‚ only two of his children were born by
Premium Chinese language
CONDITION TABLE ASSIGNMENT #3 CONDITION | DEFINITION | SIGNS & SYMPTOMS | DIAGNOSTIC TESTS | 1. Diabetic Retinopathy | A damaged blood vessel of the retina. This is caused by diabetes. | Blurred vision‚ slow vision‚ shadows or missing areas of vision‚ and trouble seeing at night. | Dialation of the pupils with eye drops and then carefully examining the retina. | | 2. Meniere‚s Disease | An inner ear disorder that affects balance and hearing. | Drop in hearing‚ pressure in the ear
Premium Pneumonia Symptoms Attention-deficit hyperactivity disorder
8. Select the best statement relating to the following reaction: 2MnO2(s) + KClO3(aq) + 2KOH(aq) 2KMnO4(aq) + KCl(aq) + H2O(l) A. Mn in MnO2 is oxidized. B. O in KClO3 is the oxidizing agent. C. K in KClO3 is the reducing agent. D. H in KOH is oxidized. E. Cl in KClO3 is the reducing
Premium Carbon dioxide Nitrogen Hydrogen
Chemistry Review (mid-term) 1. Use the equation for atomic mass to answer the following questions. (http://johnheilchem10.escuelacampoalegre.wikispaces.net/file/view/average+atomic+mass+calculations+-+3.pdf) 1. Argon has three naturally occurring isotopes: argon-36‚ argon-38‚ and argon-40. Based on argon’sreported atomic mass‚ which isotope do you think is the most abundant in nature? Explain. 2. Copper is made of two isotopes. Copper-63 is 69.17% abundant and it has a mass of 62.9296 amu.
Premium Atom Chemistry Chemical reaction
8 17 20 23 -- Impact of social networking sites on our youth. * Addiction to social networking platforms decreases the net productivity. * Absence of meaningful relations between people: While social networking definitely helps us to keep a track of our old friends‚ the charm of the friendship in the olden days is forever lost. The relations these days are extremely superficial as the ‘friends’ list contains everyone from Parents to High school bullies. * A British anthropologist
Premium Facebook Twitter Invention
HEALTH CARE ORGANIZATIONS * Laboratory Medicine (clinical pathology) * A medical discipline in which clinical laboratory science & technology are applied to the care of patients. * Comprises several major scientific disciplines: clin chem & urinalysis‚ hematology ‚ microbiology‚ immunology & blood banking‚ for some laboratories cytogenetics‚ toxicology & other specialized divisions are present. USE OF THE CLINICAL LABORATORY * Serve to educate the physician
Premium Blood Blood transfusion Medicine
Factors affecting travel to long haul destinations. In this report I will talk about how factors affect travelling to long haul destinations and in this I will include: time zones‚ climate‚ seasonality and extreme climate conditions‚ travel restrictions‚ entry and exit requirements‚ health issues and social situations. In this report I will cover all of those with destinations such as : Australia‚ North Africa‚ Thailand‚ Indonesia‚ South Africa and few more. Time zones have a big effect on travelling
Premium Management Project management Marketing