Unit operations and unit processes http://www.mine-engineer.com/ • At the end of this unit you should be able to: a. List the various reasons for undertaking size reduction and enlargement in the chemical industry b. Describe the operation principles of some size reduction equipment and size enlargement equipment c. Explain how industrial materials can be separated on the basis of their magnetic‚ electrostatic‚ hydrophobic and volatility differences respectively d. Discuss various organic unit
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is the molarity of the solution made when 1.25 grams of sodium chloride are dissolved in 500 mL of water? What is the hybridization of the carbon atom C2H2 ? What is the molecular formula of a compound with 30.5% N and 69.5% S‚ and it has a molar mass of 184 g/mol? How many electrons are found at the sublevel 1=2? How many sigma and how many pi bonds does carbon dioxide have? How many milliliters of 2.5M
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Nano-scale Phase Change Materials (PCM’s) and Their Effect on Heat Transfer Fluids Sean Schulte‚ Chaoming Wang‚ Ming Su 1NanoScience Technology Center‚ 2Department of Mechanical‚ Materials‚ and Aerospace Engineering‚ University of Central Florida‚ Orlando‚ Florida 32826. mingsu@mail.ucf.edu Abstract: Introduction: Heat transfer fluids (HTF’s) are often used as carriers in heat transfer equipment. It therefor comes as no surprise that finding a way to make HTF’s more efficient is desirable
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branch of physical science that involves the relationship between heat and other forms of energy (Energy‚ Enthalpy‚ and the First Law of Thermodynamics). There is a more specific area of thermodynamics that explicitly pertains to chemical reactions. The Gibbs free energy (ΔG°) is a chemical variable that expresses the balance between thermodynamic properties‚ known as enthalpy and entropy. Enthalpy is the heat absorbed or releases from a system and entropy is the measurement
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Chemistry Lab #1 THER 368: Heat of Neutralization Objective The purpose of this lab was to: * Determine the heat of neutralization for the reaction of sodium hydroxide (NaOH) and hydrochloric acid (HCI). Requirement The heat of neutralization (∆Hneutzn ) is the heat transferred when 1 mol of an acid reacts with 1 mol of a base. This heat is generally reported in either kilojoules per mole (kJ/mol) or kilocalories per mole (kcal mol). The reaction of HCI and NaOH solutions
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Experiment 9 Aim A. To investigate the existence of hydrogen bonds between ethanol molecules. B. To measure the strength of hydrogen bond formed between ethanol molecules C. To investigate the formation of hydrogen bonds between molecules of ethyl ethanoate and trichloromethane. D. To measure the strength of hydrogen bond formed between molecules of ethyl ethanoate and trichloromethane. Procedure A. 1. 10 cm3 of ethanol was added into an insulated 50 cm3 beaker by
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period 7 Chemistry Rubber Bands and Spontaneity Purpose: The purpose of this activity was to determine if a chemical or a physical change is spontaneous. This activity was also designed to determine if a change is spontaneous by using change in enthalpy and change in entropy with the structure of polymers. Hypothesis: If you heat the rubber band and then streatch it‚ then the rubber band will become shorter meaning it will release eneregy because it is not relaxed and the polymers are disordered
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NOT FOR ELECTRONIC STUDENT ACCESS ONLY FOR CLASSROOM USE!! Unit 9: Stoichiometry Practice 1. Differentiate between the significance of the coefficients in a balanced chemical equation and the significance of the subscripts in a chemical formula. · Coefficients show the correct proportions of atoms and molecules in a chemical reaction. They are normal sized numbers placed at the beginning of the chemical formulas in a chemical reaction during the process of balancing. They tell how many of an entire
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and have a high H+ concentration‚ and bases from 7 to 14 with a low H+ concentration. Neutralization happens when an acid and base react together and the base is consumed. The product is a neutral solution of water and a salt. HCl (acid) + NaOH (base) changes to H2O and NaCl (water and salt). The purpose of this lab was to determine what happens when and acid reacts with a base‚ and how to detect a neutralization. Results Table: Acids and Bases Lab 2 Compound |Observations |Type of Compound (Acid/base
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Bicarbonate and 5ml of water The litmus paper turned blue. The paper once dipped in the solution turned a dark blue immediately. C 5ml of Acetic Acid (Vinegar) The litmus paper turned red. The paper gradually turned red after being dipped in. Neutralization of an Acid (table 3) Amount Of Base Litmus Results 1 mL The paper stayed red 2 mL The paper still was red. 3 mL The paper began to have a blue tint to it. 4 mL The paper slowly tuned blue. 5 mL The paper turned blue. Post-Lab Questions 1. State
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