Eternity’s Gate’) ICD-10 F32‚ F33 ICD-9 296.2‚ 296.3 OMIM 608516 DiseasesDB 3589 MedlinePlus 003213 eMedicine med/532 MeSH D003865 Major depressive disorder (MDD) (also known as clinical depression‚ major depression‚ unipolar depression‚ unipolar disorder or recurrent depression in the case of repeated episodes) is a mental disorder characterized by episodes of all-encompassing low mood accompanied by low self-esteem and loss of interest or pleasure in normally enjoyable activities
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Calculation on the molar enthalpy change of a neutralization reaction Principle H2SO4(aq)+2NaOH(aq)=Na2SO4(aq)+2H2O(l) The reaction is a exothermic reaction‚ when the heat released by it is absorbed by water‚ the temperature of the water increases. The heat produced by the reaction can be calculated if it is assumed that all the heat is absorbed by the water. Heat change of reaction=-heat change of water =-mH2O×cH2O×△TH2O As the water has gained the heat produced by the reaction‚ the heat change
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Finding the Freezing Point of Water and % Antifreeze Purpose The purpose of this experiment is to determine the freezing points of water‚ 10% antifreeze‚ and 20% antifreeze utilizing an ice bath and a really cool thermometer. Apparatus Procedures Preparing the Ice Bath 1. Fill the tub ¾ full with ice. 2. Cover the ice with a respectable amount of salt. 3. Add water and stir that bad boy‚ the water should be standard temperature in a fwe minutes. Fill the test tube with any
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solution in the volumetric flask to finally prepare an acidic KHP solution. The molar mass of KHP was calculated and came to be 208.252 grams per mole. To find the moles of KHP‚ the mass of KHP (1.980 g) was divided by the molar mass of KHP ( 208.252 g) and .00951 moles are in the 1.980 grams of KHP. To find the molarity‚ the number of moles of KHP (.00951 moles) was divided by the volume of water in liters (.100 L) giving an answer of 0.0951 M. The second part of the experiment is the reaction of
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2012- 3pm This paper evaluates the importance of mass transportation in the United States and the numerous advantages of furthering its implementation. Mass transportation consists of automobile carpooling‚ buses‚ trains‚ subways‚ trolleys‚ light rails‚ cable cars‚ ferries‚ water taxis‚ monorails‚ tramways‚ and high-speed rails. Mass transit in the U.S. has proven to have significant economic‚ environmental‚ and social advantages. Increasing mass transportation will provide greater mobility‚ help
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Introduction The melting point is defined as the temperature at which the solid is in equilibrium with its liquid‚ and this characteristic is very unique‚ so a substance can be determined by the melting point. Determination of the melting point is very important technique in many areas of chemistry especially‚ in organic chemistry area because the melting point is really significant in order to identify the purity and the identity of a substance. Measuring the melting point is a fast and cost-effective
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Worked solutions to student book questions Chapter 2 Analysis by mass Q1. a b Why was the soup sample in Worked Example 2.1 heated to 110°C? Why was it necessary to weigh the sample four times? A1. a b The soup was heated above 100°C to evaporate water from the sample. By repeatedly heating the sample until the mass remained unchanged‚ the analyst could be sure that all the water had been removed. Q2. Some laboratories use microwave ovens in place of conventional ovens to
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Mass Killings Men and seldom women act in an atrocious crime to kill in a manner that is evil‚ a disregard to life of the victims and sometimes themselves. Range of events or experiences that took place in the killer’s life‚ religious beliefs‚ immoral fantasy‚ love (Turvey‚ 2012‚ p 529)‚ depression‚ political‚ observation‚ revenge (Turvey‚ 2012)‚ and frustration is a combination that compels the killer to act in this manner. The killer sometimes is influenced by the media or society that they
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Diana Shaykh Roman January 15‚ 2015 Period C Three point essay How Honeybees Keep Their Cool Introductions Many species have the ability to maintain their body temperature within a narrow range‚ regardless of the temperature of their surroundings‚ these species are known as endotherms. Scientists have been studying species such as endotherms for years. Recently‚ scientists came about an observation. How do bees or any endothermic animal‚ generate the heat required to warm itself? Although Bees
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temperature at which movement of the specimen is observed is recorded as the pour point. INTRODUCTION In the cloud point experiment‚ waxes will appear and thickens the oil and clogs fuel filter and injectors in engines. The wax also accumulates on the cold surfaces and forms an emulsion with water. The appearances of cloud point determine the first cloud of wax crystals in a liquid when it is cooled. Whereas‚ pour point experiment is to determine the minimum temperature of the oil which will continue
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