measurement of Vapor Liquid Equilibrium for the Ethanol – Water system to verify the literature data. For this the Ethanol – Water system was heated to a certain temperature which is called the equilibrium temperature at atmospheric pressure and equilibrium temperature and compositions of vapor and liquid were measured. At the equilibrium temperature the samples of both vapor and liquid were taken in two different test-tube and the refractive index of both the samples were measured by a Refractometer. Then
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(which should be in a cup) underneath the lamp. 3. Place a thermometer in the sand and in the water. 4. Record the temperature before turning on the lamp. 5. Ask an adult to turn on the lamp. Record each temperature every two minutes. Do not take the thermometer out of the sand or water. 6. After ten minutes had passed‚ turn off the lamp. Now‚ record the temperature every two minutes until ten minutes had passed. 7. Analyze your data and make a conclusion. Time (minutes) Sand (˚C)
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(g±0.002g) Initial Temperature (°C±0.25°C) Final Temperature (°C±0.25°C) Trial 1 45.032 3.012 25.00 29.50 Trial 2 45.037 3.009 22.00 26.50 Reaction 2: Solution of MgSO4*7H2O Trial 1 41.897 6.167 25.00 23.00 Trial 2 41.890 6.168 25.00 23.00 Table 4: Raw Quantitative Data from the Experiment Reaction 1: Solution of MgSO4 Before MgSO4 is a white solid powder with a mat texture Distilled water is a clear‚ transparent liquid During MgSO4 powder slowly dissolve in water‚ the temperature increase during
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certain period’ . The time interval selected to be analysed is 50-100 years‚ limited by the data available. Since 1861‚ the when the Industrial Revolution came to an end‚ ‘the global average surface temperature (the average of near surface air temperature over land‚ and sea surface temperature) has increased over the 20th century by 0.6 0.2°C’ (The start of the 20th century to the present day) since most significant climate change‚ such as a rise of 1°C on global scale since the end of the
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Science Fair Project Ideas If you’re looking for science fair project ideas you came to the right place! On this page you will find several ideas for cool science fair projects‚ for kids of all ages. These projects are particularly interesting because they have practical relevance in real life‚ and you can use common everyday materials to create them. These project ideas are mostly physics based. For the most part I have worked on these projects myself‚ and have included pictures for your benefit
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result of the testing carried out in this project. The test data has been analyzed to identify heat rejection requirements‚ optimal engine operating temperature‚ and other important design parameters. It has been found that the cooling system used in the race car must reject 9500 Watts of heat energy‚ and should aim to maintain an operating temperature of 85°C. The 2007 cooling system promises to be successful and an improvement over last years system. The new system is 10% lighter than the system
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produce. Investigate sanitizer effects on pathogens other than bacteria. Physical Methods Heat is a measure of energy in terms of quantity. The quality of being hot; high temperature: "it is sensitive to both heat and cold". A calorie is the amount of heat required to raise 1 gram of water 1°C (based on a standard temperature of 16.5 to 17.5°C). Conduction is the transfer of heat between materials that contact each other. Heat passes from the warmer material to the cooler material. For example
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cancer‚ and chronic obstructive pulmonary disease. “Almost 75% of all deaths in 1996 for the 25 to 64-year-old age group were from these types of diseases” (Benard 369). “In the past 100 years‚ the global surface temperature has warmed 0.7-1.4°. In the United States‚ temperatures have increased by approximately 1° and precipitation in the United States has been increasing much of this change is due to increases in heavy precipitation events and decreased in light-precipitation events. To establish
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shrinks. Several examples of Thermal expansion is the tendency of matter to change in volume in response to a change in temperature. When a substance is heated‚ its particles begin moving more and thus usually maintain a greater average separation. Materials which contract with increasing temperature are rare; this effect is limited in size‚ and only occurs within limited temperature ranges. Bridges and other structures have expansion joints (there are gaps in the road‚ which you hear/feel when crossing
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air. 2. To help Joel maintain a normal body temperature‚ his body will begin to send signals to conserve and generate heat. This can be done through vasoconstriction which keeps sweat glands inactive and conserves heat‚ and also by shivering which generate heat through muscle contractions. 3. Thermoregulation‚ a homeostatic process‚ is responsible for initiating and controlling the physiological responses helping to keep Joel warm. His body temperature is being monitored by his hypothalamus which
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