Question A gas is contained in a cylinder fitted with a movable piston as presented in Figure E6.4.1. Figure E6.4.1: A cylinder fitted to a moving piston If the cylinder is placed in boiling water with the piston held in a fixed position‚ 5 kcal of heat is absorbed by the gas‚ which equilibrates at 150oC and a higher pressure. The piston is then released‚ and the gas does 250 J of work in moving to its new equilibrium position. The final gas temperature is 150oC. Write the energy balance equation
Premium Chemistry Chemical reaction Temperature
extensive prop. eg. mass‚ volume‚ heat capacity‚ enthalpy‚ entropy etc. The properties which do not depends on matter present depends upon nature of substance called Intensive properties. eg. T‚P‚ density‚ refractive index‚ viscosity‚ bp‚ pH‚ mole fraction etc. 5. Internal energy: The total energy with a system. i.e. U = Ee + En + Ec + Ep + Ek + -----U = U2 – U1 or UP – UR & U is state function and extensive properly. If U1 > U2 energy is released. 6. Heat (q): It I a form of energy which
Premium Management Marketing Balance sheet
The first person to successfully challenge the caloric theory was Benjamin Thompson. Benjamin observed that a dull boring bit could generate more hat than needed to melt the entire cannon barrel. 3. The significance was that Joule discovered that heat was the equivalent of mechanical work‚ which made it a form of energy and not a material fluid. 4. 4.18 N⋅m‚ or J/g and multiplied by °C is the required energy to raise the temperature of a gram of water to 1 °C. 5. Internal energy is the total
Premium Temperature Thermodynamics
ethyl acetate (EtOAc) and toluene by using the method of fractional distillation and to analyze the fractions using gas chromatography (GC). ethyl acetate toluene Distillation is a method known as separating or purifying a liquid or mixture by vaporization and condensation. In a simple distillation‚ the liquids being separated boil below 150 0C at 1 atmosphere from nonvolatile impurities and another liquid that boils at least 25 0C higher than the first. A solution is heated to its boiling point
Premium Distillation Chromatography Gas chromatography
Brittany Roberts AP bio WATER ESSAY The first thing water reminds us of is the clear liquid in our water bottles. However‚ water is more than a normal substance. Water is the beginning and the continual of life on earth. Because of its many unique properties‚ water was able to start life on our planet. Water covers about 3/4 of the earth. In nature‚ water naturally exists in all three physical states of matter—solid‚ liquid and gas. Water’s extraordinary properties are emergent properties resulting
Premium Water Hydrogen Acid
Intermolecular forces exist between independent particles‚ such as atoms‚ ions‚ or molecules. They can be forces of either attraction or repulsion. The amount of charge‚ how it is distributed‚ and the length of time that a charge distribution exists can affect the strength of intermolecular forces. And despite having variable force strengths‚ all intermolecular forces are considered weak compared to chemical bonds‚ or intramolecular forces. Chemical bonds are not only stronger; they are also more
Premium Chemical polarity Atom Molecule
Connor Shortall AP Biology Vocabulary List for Chapters 1-5 Chapter 1 Properties of life a. Order: Molecules in living things are arranged in specific structures. b. Reproduction: Organisms will reproduce their own kind; life comes from life c. Growth & Development - DNA directs the pattern of growth and development‚ producing an organism that is characteristic of its species d. Energy Processing- Organisms take in energy though various methods and make it usable e. Response to the Environment -
Premium Atom Covalent bond Chemical bond
as a Purifier for a contaminated and salt water. Unpublished Research Paper. Napnapan National High School‚ Tigbauan‚ Iloilo. Abstract Distillation is one of many process available for water purification‚ and sunlight is one of several forms of heat energy that can be used to power that process. Sunlight has the advantage of zero fuel cost but it requires more space and generally more costly equipment. To dispel a common belief‚ it is not necessary to boil water to distill it. Simply elevating
Premium Drinking water Water treatment Water
CHE656 Computer Applications for Chemical Engineering Practice Process Simulation with ASPEN PLUS Exercise Problems Version 2012 Prepared by Dr. Hong-ming Ku King Mongkut’s University of Technology Thonburi Chemical Engineering Department Chemical Engineering Practice School © May 2004-2012 – Use with Permission of the Author Only 1 Section 1 Elementary Modules‚ Mass Balances‚ and Degree of Freedom Analysis 2 1. Mass Balances and Constraints with Elementary Modules
Premium Chemical engineering Benzene Chemical reaction
temperature‚ Maxwell’s distribution law of molecular speeds (without derivation)‚ most probable‚ average and root mean square speed of gas molecules‚ principle of equipartition of energy (without derivation). Mean free path and collision frequencies. Heat capacity of gases (molecular basis); viscosity of gases. Real gases‚ compressibility factor‚ deviation from ideality‚ van der Waals equation of state‚ critical phenomena‚ continuity of states‚ critical constants. * Liquid state: physical properties
Premium Thermodynamics Entropy Temperature