Introduction The energy content of a substance, called its enthalpy, cannot be measured. However, the enthalpy change, ∆H, of a chemical reaction can be measured. Most chemical reactions are accompanied by energy changes, usually in the form of heat energy. The enthalpy change of a reaction is the heat energy released or absorbed in a chemical reaction. Exothermic reactions are reactions that releases heat energy to the surroundings. The enthalpy of the products is lower than that of the reactants
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MATERIALS: 1. Vinegar 2. Tester 3. Pliers 4. Copper Wire (2) 5. Masking Tape 6. Small Cups (2) 7. Calculator 8. Screwdriver 9. Nails INVESTIGATORY PROJECT Submitted By: Group 3 Submitted to: Tr. Grace S. Mernilo ACKNOWLEDGEMENT We , The Group 3 of Saint Elizabeth Thanks Ms. Grace and The Principals for giving us the Opportunity to see and listen to our Investigatory
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month of investment Energy: $.50 per BTU Show the percent change in productivity for one month last year Versus one month this year, on a multifactor basis with dollars as the common denominator. PX 1.9 Lillian Fok is president of Lakefront Manufacturing, A producer of bicycle tires. Fok makes 1,000 tires per day with the following resources: Labor: 400 hours per day @ $12.50 per hour Raw material: 20,000 pounds per day @ $1 per pound Energy: $5,000
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door? In Activity 1.3.3 you will investigate the effects of work, thermo energy, and energy on a system, as in the case of the room with the door left open. Procedure Answer the following questions as your teacher discusses the Introduction to Thermodynamics presentation. 1. Define thermodynamics. 2. List three examples of a thermodynamic system. a. b. c. 3. Define thermal energy. 4. Define temperature. |Scale
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steam turbine operates at steady state with inlet conditions of P1 = 5 bar, T1 = 320 o C. Steam leaves the turbine at P2 = 1 bar and T1 = 180 o C. There is no significant heat transfer between the turbine and its surroundings, and kinetic and potential energy changes between inlet and exit are negligible. a. Calculate power output (per unit mass of steam flowing) of the turbine. b. Calculate the isentropic efficiency of the turbine (ηs ) and show the states on h-s diagram. c. Calculate the second law efficiency
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------------------------------------------------- MIDLANDS STATE UNIVERSITY FACULTY OF COMMERCE Department of Accounting Industrial Attachment Log Book Name : RAY Surname : PASIPAMIRE Reg. Number: R124609Y Period of Attachment: August 2014 to July 2015 Institution Attached to: Westrand Investment RECORD OF WORK DONE (AUGUST 2014) Week | Activity | Student’s comments | 18-23(Orientation Week) | * I was introduced to members of the staff and shown around
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(B-C)(30) BLOCK-CHARGEs are used to calculate energy or demand costs that vary according to the amount consumed. BLOCK-CHARGEs are also used for time-of-use demand charges. Up to 30 BLOCKCHARGEs may be defined, and up to 10 may be referenced by each UTILITY-RATE. The same BLOCK-CHARGE may be referenced by more than one UTILITY-RATE; the program automatically makes as many working copies as are required. See the RATCHET command. BLOCK-CHARGE defines the energy or demand charges that vary according to the
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Topic: Why Dieting Makes you gain weight. Thesis: Dieting unfortunately can make you gain weight depending on many factors. There are a lot of positives for sticking to a diet but mainly there can be a lot of negative outcomes if you do not follow a diet the correct exercise and calorie intake you could find yourself gaining weight while doing the diet you are on. There are a multitude of different dieting plans, some more effective than others. Which is why some plans may or may not work the
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This problem emphasizes the fact that even if we have two different charges, mutual electrostatic force between them will be same. 1.8 Coulomb’s Law in Vector Form As force is a vector quantity, it has some magnitude as well as direction. We will write coulomb’s law in vector form so that it will represent magnitude as well as direction of electrostatic force. Consider two charges q1 and q2 separated by distance r. First of all we will define . It is the vector joining charge q1 and q2.
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Introduction: The melting point of a pure substance is a characteristic that is physically consistent with each specific substance. When a substance is impure, it causes the melting point to decrease and the range of the melting point to increase. In order to identify a pure substance, it must be purified in order to get an accurate melting point estimation. Purification can be done through crystallization. Crystallization is one of the simplest and most effecting ways to purify a solid. The procedure
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