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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has just had a new Point of Sale system input which meant we had to train 150 staff over two days which‚ as you can imagine‚ was highly pressured giving the short turnaround. Can you give an example of when you have been put in a similar high pressure situation and how did you deal with it? 9/ What does confidentiality mean to you? 10/ What does equal opportunities mean to you? N.B. If there is time‚ invite the candidate to ask any questions they may have about the role and organisation
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mass‚ pressure (P)‚ thermodynamic temperature (T) and volume (V). These properties are related to each other and the state of a gas is determined by their values. The three laws are derived from these properties. Discussion Boyle’s gas law Boyle’s law relates the volume and pressure of an ideal gas. It states that when the temperature of a given mass of a confined gas is held constant‚ its pressure and volume are inversely proportional. In other words‚ the product of absolute pressure and volume
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Martin | Bottle Rockets | Table of Contents This extended investigation serves to examine and evaluate the physical forces that affect the flight of a bottle rocket. This will be accomplished by altering the water levels and the level of air pressure (psi) within the rocket will be altered‚ and tested‚ to further understand the mechanics of bottle rockets. Introduction Rocket flight has long been at the forefront of the human race’s exploration of our universe. This undeniable fact makes it
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Vacuum Technology Nagamitsu Yoshimura Vacuum Technology Practice for Scientific Instruments Dr. Nagamitsu Yoshimura 3-22-75 Fujimoto Kokubunji‚ Tokyo 185-0031 Japan ISBN 978-3-540-74432-0 Library of Congress Control Number: 2007933832 c 2008 Springer-Verlag Berlin Heidelberg e-ISBN 978-3-540-74433-7 This work is subject to copyright. All rights are reserved‚ whether the whole or part of the material is concerned‚ specifically the rights of translation‚ reprinting‚ reuse of illustrations
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ratio as follows: 1 H2(g) to 2 e- Reduction (at the cathode) (1) 1 O2(g) to 4 e- Oxidation (at the anode) (2) The moles of electrons can be expressed as a rearrangement of the Ideal Gas Equation: Ne = PV/RT (3) Where P = pressure in atm‚ V = volume in L‚ R = Gas Constant of 0.08206 atm mol-1 K-1 and T = temperature in Kelvin The actual electronic charge of water will be calculated as follows: e- = it/NeN x the stoichiometric ratio (1) or (2) above Where
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9.19 9.20 9.21 Pressure at the tip of anvil is 2.5 × 1011 Pa (a) 0.7 m (b) 0.43 m from steel wire Approximately 0.01 m 260 kN 2.51 × 10–4 m3 Chapter 10 (a) decreases (b) η of gases increases‚ η of liquid decreases with temperature (c) shear strain‚ rate of shear strain (d) conservation of mass‚ Bernoulli’s equation (e) greater. 6.2 × 106 Pa 10.5 m Pressure at that depth in the sea is about 3 × 107 Pa. The structure is suitable since it can withstand far greater pressure or stress. 6.92 ×
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[As you know‚ these laboratory sessions are compulsory course-work. You must attend them. Should you fail to attend either one you will be asked to complete some extra work. This will involve a detailed report and further questions. The simplest strategy is to do the lab.] Notes For the First Year Lecture Course: An Introduction to Fluid Mechanics School of Civil Engineering‚ University of Leeds. Homework: Example sheets: These will be given for each section of the course. Doing these
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H2O/ (±0.05°C) 18‚0 18‚5 19‚0 Temperature of H2O/ (±0.05K) 291‚2 291‚7 292‚2 101‚40 101‚40 101‚40 Higher Water Level (±0.05cm) 21‚5 24‚5 28‚5 Lower Water Level (±0.05cm) 12‚5 11‚0 13‚5 Pressure of Atmosphere/ (±0.005kPa) * The temperature is converted to Kelvin from Celsius for the significance of this lab. ! Qualitative Observation ! I. Bubbles that vary in sizes form from the copper (Cu) coiled magnesium (Mg) travel upwards
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design‚ properties and functioning. Effect of various factors like seal balance‚ face pressure‚ temperature and lubrication on performance of seal and probable causes of seal leakage with their corrective action has also been described. Mechanical seals arrest the leak from shaft where it comes out of the casing. They work satisfactorily to seals almost any liquids‚ operate under full vacuum to 80 Bar pressure and temperature from 100 to 840oC. It can handle shaft speeds up to 3600 RPM and special
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