INTRODUCTION TO ENVIRONMENTAL STUDIES INSTRUCTOR Sudipta Sarkar‚ Ph. D. Assistant Professor Department of Civil Engineering Office: Room # 316A Contact: sarkarsudipta@gmail.com Cell: 8954386690 CE-105‚ Introduction to Environmental Studies; L: 3; Credits: 3; S. No. Contents Contact Hours 1. Overview: Environment and Natural Processes; Development (Resource Utilization & Waste Generation); Environmental issues; Concept of Sustainable Development; Issues affecting future
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CHAPTER ONE 1.0 INTRODUCTION Starch is one of the most abundant substances in nature‚ a renewable and almost unlimited resource. Starch is produced from grain or root crops. It is mainly used as food‚ but is also readily converted chemically‚ physically and biologically into many useful products to date; starch is used to produce such diverse products as food‚ paper‚ textiles‚ adhesives‚ beverages; confectioning‚ pharmaceuticals‚ and building materials. Cassava starch has many remarkable characteristics
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-425.93 -92.30 -407.27 -285.83 Hess’s Law: ΔH(rxn) = Sum[ΔH(f) products] - Sum[ΔH(f) reactants] ΔH(rxn) = [(1 mol)(-407.27 kJ/mol) + (1 mol)(-285.83 kJ/mol)] - [(1 mol)(-425.93 kJ/mol) + (1 mol)(-92.30)] = - 359.47 kj/molWhy are there energy changes when a chemical reaction takes place? Do physical state changes involve energy changes? Exothermic energy changes and endothermic energy changes in chemical reactions are described‚ and exothermic reactions and endothermic reactions are discussed
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Introduction In this lab‚ the purpose was to verify Hess’s Law. Four main topics were covered during this experiment including enthalpy of reaction‚ heat of formation‚ Hess’s Law‚ and calorimetry. The enthalpy of reaction‚ ΔHrxn is the heat or enthalpy change for a chemical reaction. The energy change is equal to the amount of heat transferred at a constant pressure in the reaction. The change represents the difference in enthalpy of the products and the reactants and is independent of the steps
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CALORIMETRY INTRODUCTION Calorimetry is used to determine the heat released or absorbed in a chemical reaction (1).Trustees of darmouth college states that (1) is used to determine the heat released or absorbed in a chemical reaction. To determine the heat released or absorbed in a chemical reaction an instrument called calorimeter is used. A calorimeter is an instrument used for measuring the heat of a reaction during a well defined process (2). Brucat states that (2) a calorimeter is an instrument
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Experiment 5 Polytropic Expansion of Air Object The object of this experiment is to find the relation between pressure and volume for the expansion of air in a pressure vessel – this expansion is a thermodynamic process. Introduction The expansion or compression of a gas can be described by the polytropic relation ‚ where p is pressure‚ v is specific volume‚ c is a constant and the exponent n depends on the thermodynamic process. In our experiment compressed air in a steel
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International Journal of Engineering Research and Applications (IJERA) ISSN: 2248-9622 National Conference on Emerging Trends in Engineering & Technology (VNCET-30 Mar’12) Theoretical and Experimental Evaluation of Vapour Absorption Refrigeration System V.D.Patel*a‚ A.J.Chaudhari*‚ R.D.Jilte* (Department of Mechanical Engineering)* Vidyavardhini’s College of Engineering and Technology‚ Vasai (W)‚ Dist: Thane‚ Pin: 401 202‚ (M.S.)‚ INDIA. e-maila: v_patel@rediffmail.com ABSTRACT The vapour
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Appearance: soft‚ silvery-white‚ highly reactive metal Atomic Radius (pm): 248 Atomic Volume (cc/mol): 55.9 Covalent Radius (pm): 216 Ionic Radius: 147 (+1e) Specific Heat (@20°C J/g mol): 0.360 Fusion Heat (kJ/mol): 2.20 Evaporation Heat (kJ/mol): 75.8
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MDH INTERNATIONAL SCHOOL DWARKA LAST WORKING DAY – SATURDAY‚ 18 MAY 2013 SCHOOL REOPENS ON – MONDAY‚ 1 JULY 2013 [pic] HOLIDAY HOMEWORK CLASS –IX ENGLISH 1.Read the novel ‘Three Men in a Boat’(TERM-I).Make a book jacket on a hand made sheet and write the summary of the novel.Also write the critical analysis of the novel throwing light on the themeof the plot. 2.Take any three characters from the novel and write their character sketch. 3. Find out 40 new words from the
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more than 1000 J/g‚ express it as kilojoules kJ) Table 2. Measured Energy from Dorito Weight of Dorito (g) | Temp. Of Water at start (*C) | Temp. Of Water at end (*C) | Temp Rise of Water (*C) | Energy Released (KJ) | Energy Content (J/g) | 1.9 | 21 | 90.1 | 69.1 | 5.8044 | 3.055 | Table 3. Measured Energy from Popcorn Weight of Popped Corn (g) | Temp. Of Water at start (*C) | Temp. Of Water at end (*C) | Temp Rise of Water | Energy Released (KJ) | Energy Content (J/g) | 0.29 | 21 | 35
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