ANS: D OBJ: Goal #3.2: Name compounds 11. What is the name of Mg(OH)2? a.|magnesium oxide| b.|magnesium dihydroxide| c.|magnesium hydroxide| d.|magnesium(II) hydroxide| ANS: C OBJ: Goal #3.2: Name compounds 12. What is the name of KHCO3? a.|hydrogen carbonate potassium ion| b.|potassium hydrogen carbon trioxide| c.|potassium bicarbonate| d.|potassium hydrocarbonate| ANS: C OBJ: Goal #3.2: Name compounds 14. What is the name of Cu2S? a.|copper sulfide| b.|copper(I)
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Purpose: The purpose of the experiment is to calculate the enthalpy change occurring in the first of reaction of sodium hydroxide with hydrochloric acid and sodium hydroxide with ammonium chloride. Using Hess’ Law and the results for the enthalpy change of the first two reactions should give the enthalpy change of the third reaction of ammonia with hydrochloric acid. Procedure: Part 1: Construct a calorimeter of two nested stereophony cups where the cover has a hole to fir a thermometer. Measure
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Calorimetry 1. How many calories would it take to raise the temperature of 200 g of water 100oC? 2. It takes 23.5 J to raise the temperature of 10.0 g of silver by 10oC. What is the specific heat of silver? 3. A 255 g quantity of gold is heated from 28oC to 100oC. How many joules of energy were used? (specific heat of gold = 0.13 J/goC) 4. What will be the final temperature of 5.00 g of silver at 37oC if it gives off 25.0 J of heat to the surroundings
Free Thermodynamics Energy Enthalpy
depends only on its present state. Constant Volume- Delta E= q + w =q = qv Hess’s Law- in going from a particular set of reactants to a particular set of products‚ the change in enthalpy is the same whether the reaction takes place in one step or a series of steps. Standard Enthalpy of Formation- The change in enthalpy that accompanies the formation of one mole of a compound from its elements with all substances in their standard states. Standard State- A precisely defined reference state. Fossil
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The Advanced Placement Examination in Chemistry Part II - Free Response Questions & Answers 1970 to 2007 Thermodynamics Teachers may reproduce this publication‚ in whole or in part‚ in limited print quantities for non-commercial‚ face-to-face teaching purposes. This permission does not apply to any third-party copyrights contained within this publication. Advanced Placement Examination in Chemistry. Questions copyright© 1970-2007 by the College Entrance
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LECTURE 7 GRAPHICAL REPRESENTATION OF DATA 1. Pressure versus temperature (P-T) 2. Pressure vs. volume (P-v) 3. Temperature vs. volume (T-v) 4. Temperature vs. entropy (T-s) 5. Enthalpy vs. entropy (h-s) 6. Pressure vs. enthalpy (P-h) The term saturation temperature designates the temperature at which vaporization takes place. For water at 99.6 C the saturation pressure is 0.1 M Pa‚ and for water at 0.1 Mpa‚ the saturation temperature
Free Thermodynamics Temperature Boiling point
energy‚ or Gibbs free energy. The equation (1) gives the relationship of how entropy (∆S) and enthalpy (∆H) along with temperature affects the amount of free energy‚ and henceforth the spontaneity. A spontaneous process may be quick or slow‚ and it is only affected by temperature and energy‚ therefore it is not related to kinetics or reaction rate. equation (1): If entropy is less than enthalpy‚ the enthalpy term determines if the reaction
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CHEMISTRY (Theory) Time allowed : 3 hours General Instructions: (i) All questions are compulsory. Maximum Marks : 70 (ii) Marks for each question are indicated against it. (iii) Question numbers 1 to 8 are very short-answer questions and carry 1 mark each. (iv) Question numbers 9 to 18 are short-answer questions and carry 2 marks each. (v) Question numbers 19 to 27 are also short-answer questions and carry 3 marks each. (vi) Question numbers 28 to 30 are long-answer questions and carry 5 marks
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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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Air Conditioning Psychrometrics Course No: M05-005 Credit: 5 PDH A. Bhatia Continuing Education and Development‚ Inc. 9 Greyridge Farm Court Stony Point‚ NY 10980 P: (877) 322-5800 F: (877) 322-4774 info@cedengineering.com AIRCONDITIONING PSYCHROMETRICS AIR CONDITIONING PSYCHROMETRICS In air-conditioning system‚ the air must undergo one or several of the following processes: Psychrometrics can be used to predict changes in the environment when the amount of heat and/or
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