Combustion of Alcohols Purpose: The purpose of this investigation is to use calorimetry to determine the molar enthalpy change in the combustion of each of a series of alcohols. Question: How do the enthalpies of combustion change as the alcohol molecules become larger? Prediction: I predict the bigger the molecule the more the energy will be released. Materials: On lab sheet Procedure: On lab sheet Observation: On other page Analysis: b) i) Ethanol – q=(100g)(4.18J/g/C)(25.5C) q=10659J
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Into thin Air by Jon Krakauer Research Topics Hypoxia “At 29‚028 feet up in the troposphere‚ so little oxygen was reaching my brain that my mental capacity was that of a slow child” (6). Lesser Peaks “To the South‚ where the sky had been perfectly clear just an hour earlier‚ a blanket of clouds now hid Purmori‚ Ama Dablam‚ and other lesser peaks surrounding Everest” (6). Oxygen Tanks “Wanting to conserve what-ever oxygen remained in the tank‚ I asked him to reach inside my backpack and
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WATER QUALITY AND CONTINMINANTION Introduction I. Body Paragraph #1 – Background~ Water quality is decided by assessing three classes of attributes: biological‚ chemical‚ and physical. There are criteria of water quality set for each of these three categories of properties. The standards for drinking water are developed by the Environmental Protection Agency (EPA)‚ World Health Organization (WHO) etc. All municipal (public) water supplies must be measured against these standards. Testing how
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Self Heating Food and Drink Cans Heater meals – originally developed for military use – are ready-made self-heating meal packs. They can be heated in many ways – by pressing a button on the packaging‚ unwrapping and shaking the pack‚ or pouring the contents of one bag into another and waiting for a few minutes – all of which use exothermic chemical reactions. These meals can be used to motivate students to study such reactions relatively safely and without the use of a burner. Plus there is the
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2. Objectives The objectives of this experiment are to observe the keeping quality of some food products‚ study the various simple methods of moisture determinations using different drying method. And determine the water activity in some food samples such as biscuits‚ bread‚ flour and instant noodles by using water activity measurement machine. 3. Theory To determine the moisture content in the food‚ methods such as open dish method and infrared balance method are used. 3.1 Hypothesis
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Kaam se daro nahi‚ Kaam ko karo nahi 2) Kaam karo ya na karo‚ Kaam ki fikr jaroor karo‚ Fikr karo ya na karo kaam ka jikr jaroor karo 3) Kaam ki mat lo tension varna Family payegi Pension encomium ɛnˈkəʊmɪəm/Submit nounformal noun: encomium; plural noun: encomia; plural noun: encomiums 1. a speech or piece of writing that praises someone or something highly. synonyms: eulogy‚ speech of praise‚ panegyric‚ paean‚ accolade‚ tribute‚ testimonial‚ compliment; More Origin mid 16th cent.:
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London‚ Chapman and Hall. Roth‚ W.‚ & Roychoudhury‚ A. (1993). The concept map as a tool for the collaborative construction of knowledge: A microanalysis of high school physics students Schlag‚ S.‚ & Ploetzner‚ R. (2011‚ Nov). Instructional Science‚ 39(6)‚ 921-937. Sweller‚ J. (11994). Cognitive load theory: Learning difficulty and instruction design. Learning and Instruction‚ 4‚ 295-312 Wang‚ V Wilgis ‚ M.‚ & McConnell‚ J. (2008‚ March). Concept mapping: an educational strategy to improve graduate
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Contributions of Activity-Based Costing (ABC) to the Modern Business Environment In the increasingly competitive business environment‚ the enterprises who intend to maintain and enhance competitive advantages must build an efficient costing system to control‚ plan and decide how to improve the profitability and efficiency of the operation. Activity-based costing system (ABC) is such an advanced costing system that satisfies the needs of companies in modern business environment. This essay gives
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application of online examinations among its students. The Development if online examination had simplified the preparation of examination and assessment of learning achieved by the students. 2. LAN BASED EXAMINATION By Kimberly V. Alvarez‚ December 2003 This study is about a Local Area Network(LAN) Based examination that tries to eliminate the use of manual processing into a computerized system by developing a software product. It has been found that the study helped lessen the work of the instructors
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Susanto Class: 5c Introduction From previous experiments we ’ve learned that salt is extracted from green beans. To be more specific: salt is extracted from when the beans are cooked in water in which salt has been dissolved. This experiment is based upon the osmoses theory. According to this theory the cell walls of the green beans are what we call a semi permeable membrane. This membrane only lets water through and not the substance that is dissolved into the water‚ as in this case is NaCl. Because
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