Colligative Properties & Osmotic Pressure Peter Jeschofnig‚ Ph.D. Version 42-0149-00-01 Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate student’s writing of lab
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Thermodynamics of the Dissolution of Borax Lina Jawadi Objectives: * Study a system of salt and water solution. * Determining a variety of important thermodynamics quantities from the solubility information at various temperatures. Background: The salt and water solution in this experiment has relatively simple solubility equilibrium of borax in water. Na2B4O7 . 10 H2O 2Na + + B4O5(OH)42- + 8H2O This reaction is an equilibrium
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How great is it that America is unique compared to the rest of the world? Well‚ in the case of using the imperial system instead of the metric‚ it is not very great. The metric system‚ also called the International System of Units or SI‚ is a system of measurements and units that started to develop in 1670 in France by Gabriel Louten‚ a vicar. After facing much criticism for challenging the previous system of measurements for each country‚ it was gradually implemented internationally. However‚ the
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• Resistance‚ Inductance‚ Capacitance • Purity of components • Impedances and admittances • Physical parameters Bridge Instruments Types of Bridges • • AC Bridge DC Bridge DC Current Bridge Instruments • Wheatstone bridge and Kelvin Bridge • Used for measurement of resistance • Made sensitive to temperature‚ pressure and light • Complex physical phenomena such as dew point humidity‚ mass flow • Range from 100 Ω to several hundred kΩ WHEATSTONE BRIDGE •R1 & R2 Known
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sun and also cools a lot quicker. The mathematical quantity of heat transfer‚ loss or gain in a heat transfer is given by Q = MCΔT ie. Given the specific heat of a substance‚ the amount of heat energy required to raise 1kg of that substance by one Kelvin degree. And so given that the Specific heat of Ice is 2100JKg-1 K-1 ‚ Sea Water is 3900JKg-1 K-1 ‚ and that the thermal conductivity of Air is 0.023 Jm-1 S-1 K-1 ‚ Water is 0.56 Jm-1 S-1 K-1 and Brick is 0.84 Jm-1 S-1 K-1 . So according
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CH 2 -According to Aristotle‚ larger‚ heavier objects were supposed to fall to the ground faster than smaller‚ lighter objects. Galileo performed a number of experiments to Aristotle’s pronouncements‚ that two objects of different weight dropped from the same height fall down at exactly the same rate. -Copernicus published his findings in 1543‚ the same years as his death‚ in a text entitled (On the Revolutions of the Celestial Spheres). -Heliocentric theory was proposed by Aristarchus of Samos
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AIT Physics 1 Honors Laboratory: Specific Heat and Conservation of Energy When energy in the form of heat Q is added to a material‚ the temperature of the material rises. Note that temperature‚ in units of degrees Celsius (°C) or Kelvin (K)‚ is a measure of how hot or cold a substance is‚ while heat‚ in units of joules (J) or calories (cal)‚ is a measure of its thermal energy. 1cal = 4.19J. A measure of the efficiency with which a substance can store this heat energy is known as specific heat capacity
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Three things are usually required for a chemical explosion: a chemical reaction that occurs very rapidly‚ a large increase in gas pressure‚ and a confined-reaction vessel in which the pressure of the gaseous products can increase to a point that the gases break violently out of the container. In this chemistry and physics science fair project‚ you will use the combustion of ethanol to provide energy for a small explosion. The chemical equation that describes the combustion of ethanol is shown below
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~ Indian Institute of Technology Kharagpur Department of Chemistry Spring 2011-2012 Mid-semester Exam Time: 2 Hrs No. of Students: 700 Subject No: CY11001 Full Marks: 30 Subject Name: Chemistry (1st Year) Instructions: (a) Attempt ALL the questions. (b) All parts of a question MUST be answered together. (c) Numerical results MUST be reported in SI units. (d) Explicitly mention the sign convention used. (e) Clearly state whether you are using oxidation or reduction potentials in
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astronomy‚ meteorology‚ geology‚ oceanography‚ and environmental science. 4. Which of the following is not an example of a mineral crystal shape? A. Pyrite B. Quartz C. Kryptonite D. Calcite 5. A person’s temperature is 40° C. What would it be in Kelvin? A. 313 K B. −313 K C. 313° C D. −313° C 6. Which of the following is an example of a homogeneous mixture? A. Zinc B. Copper C. Bronze D. Sand 7. Please choose the answer that describes the scientific notation for 5‚098‚000. A. 5.0986
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