principle of operation is like that of a steam engine‚ except there is no combustion involved. Liquid nitrogen is pressurized and then vaporized in a heat exchanger by the ambient temperature of the surrounding air. The resulting high – pressure nitrogen gas is fed to the engine converting pressure into mechanical power. The only exhaust is nitrogen. The usage of cryogenic fuels has significant advantage over other fuels. Also‚ factors such as production and storage of nitrogen and pollutants in the exhaust
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have a greater distance apart from each other than the particles between a solids and a liquid 2) why are gasses considered fluids? Gasses are fluids because they are able to flow 3) what’s happens to gas particles when a gas is compressed? When a gas is compressed it will move gas particles closer and make the volume smaller. 4) what is the difference between force and pressure? Force is the pressure applied to an object. Pressure is moved when something moves. 5) what’s is the
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confined space some of the liquids will evaporate. Evaporation of the liquid depends on the strength of the intermolecular forces that are between liquid molecules. During the evaporation process of the liquid‚ new gas molecules exerts pressure in the sealed container‚ while some of the gas condenses back to the liquid state. If the temperature inside the container is kept constant‚ then the equilibrium at some point will be reached. When the equilibrium is reached‚ the rate of condensation is equal
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Show that the temperature of the gases along a cylindrical exhaust pipe is given by the following expression: hπ d T − Tw = (To − Tw ) exp − x mC & p where Tw is the wall temperature assumed to be constant along the pipe‚ To is the gas temperature at the inlet to the exhaust pipe‚ h is the convective surface heat transfer coefficient‚ d is the diameter of the pipe‚ m is the mass flow rate of the exhaust gasses‚ Cp is the mean specific heat of the exhaust gasses‚ x is the distance
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you have an idea about what you want but not quite sure if you want a gasoline or a diesel engine. Well‚ gas and diesel engines are very similar yet different in quite a few ways. At first glance‚ someone who doesn’t know much about either of the two engines might ask‚ “What’s the difference?” To the untrained eye they might look exactly alike‚ but don’t judge the engine by its exterior look. Gas engines are mainly used by the individual in personal vehicles whereas diesels are very popular in the
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TUTORIAL 1 1. Convert the following temperatures to their values on the Fahrenheit and Kelvin scales: (a) the boiling point of liquid hydrogen‚ –252.87°C (b) the temperature of a room at 20°C. 2. A constant-volume gas thermometer is calibrated in dry ice (–80.0°C) and in boiling ethyl alcohol (78.0°C). The respective pressures are 0.900 atm and 1.635 atm. (a) What value of absolute zero does the calibration yield? (b) What pressures would be found at the freezing and boiling points of water
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1) Explain why alveolar gas has a different composition from air. Atmospheric (external) air contains a high percentage of oxygen and nitrogen whereas alveoli gas contains a lower percentage of oxygen and a higher percentage of carbon dioxide. The differences in composition are due to the fact that gaseous exchange is taking place within the alveoli in the lungs. Oxygen is diffusing from the alveoli into the pulmonary artery and carbon dioxide is diffusing back into the alveoli from the pulmonary
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Glowing splint Copper (II) sulphate Lead (II) nitrate Ammonium chloride Zinc sulphate Basic copper (II) carbonate Change from blue to white Water droplets formed Changes from white to orange Bubbled before turning to a gas No color change Powder hardened Bubbled while heating No color change Changed from green to black Crystals floated upon heating Yes Yes Yes Yes Yes No change No change No change No change No change
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Boyle’s Law Lab Purpose: To determine the relationship between pressure exerted and volume of a gas. Materials: Lab simulation. Procedure: 1. Open animation file 2. Modify the number of books that press down on the piston starting from 0 books and increasing by 1 each time until 19 books. 3. Record the pressure (# of books) and volume for 19 different pressure values. 4. Record those values in a table 5. Using the data‚ plot a graph of pressure in function of volume. Conclusion:
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manager of supply management for the Fauquier Gas Company in the Carolinas. 2. Fauquier Gas Company‚ as one of the nation’s 440 gas companies. 3. Served an area where land use was changing from Agricultural‚ Residential and Commercial. 4. Mr. Murphy is responsible for the purchases of material used in gas distribution such as fitting‚ pipes and meters. 5. To meet the increased demand for gas. 6. Concerned about being able to find
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