theory of the experiment is that an object needs an amount of heat for it to change a unit mass by 1 degree in temperature. The objectives of the experiment are to determine the specific heat of metal specimens using the method of mixture‚ to measure the equipment properly‚ to carefully measure the temperature of the equipment‚ to be patient while waiting for the output of the experiment and to be precise in computing for the specific heat of the specimen. Theory Blanza‚ J.‚ Guevara‚ C.‚ Morsiquillo
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Thermochemistry Thermochemistry is the study of heat evolved and absorbed during the chemical reactions. The system is the interest of the universe; the surroundings are the rest of the universe in which the exchange of the energy with the system takes place. Both‚ the system and the surroundings make up the universe. Heat flow is the transfer of heat from a warm place to a cooler one. System to surroundings: Surroundings to system:
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- deals with the dynamics of heat and the conversion of heat to work. (car engines. Refrigerators‚ etc) - first law of thermodynamics heat added to a closed system goes into the internal energy of the system and/or doing work - H= delta E1 + W - a heat engine takes heat from a high temperature reservoir‚ converts some to useful work and rejects the remainder to the low temp reservoir. - Second law of thermodynamics - It is impossible for heat to flow spontaneously from a
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Trial 2 | Trial 3 | Trial 4 | Trial 5 | Heat produced by the burning cashew (in cal) | 4720 cal | 4320 cal | 8320 cal | 2480 cal | 1200 cal | Heat produced by 1 gram of cashew (in cal) | 11800 cal | 6171.43 cal | 5942.86 cal | 2755.56 cal | 1714.29 cal | Kilocalories of heat from 1 gram of cashew | 11.80 kcal | 6.17 kcal | 5.94 kcal | 2.76 kcal | 1.71 kcal | Note: All decimal values are approximated to two decimal values. Calculations: The heat produced by the
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Background Information: Heat is energy that transfers from one object to another because of a temperature difference between the objects. Heat is measured in a calorimeter and the units for heat are joules or calories. The calorimeter uses the Law of Conservation of Energy which states that energy is never created or destroyed but is transferred between objects. Temperature is a measure of the average kinetic energy of the particles an object which is different that the heat which is all the energy
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familiar with is called heat while temperature is the measure of a degree of heat or coldness of an object. In everyday life‚ heat or cold is commonly used to explain the degree of temperature of an object. An object that is said to be hot means it has a high temperature. Similarly‚ when an object is said to be cold‚ is means it is has a low temperature.  IMAGE GOES HERE Image Source Why does heat move from our hands to ice cubes and not vice versa? This is due to the heat transfer from a high
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temperature of the water it was boiled in. 70°C 3. What was the specific heat of water in J/g°C? 4.186 J/g°C 4. Using the following equation‚ your answers to questions 1-3‚ and your data table‚ determine the specific heat of the metal sample you tested. 5. Identify you metal using the list of specific heat values provided. The metal that was identified was Zinc. 6. Calculate the percent error in the specific heat value that you determined experimentally. Conclusion: The purpose of
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each of the fuels. The averages were based on five trials. PropanolTheoretical Heat of Reaction: Bonds Broken Bonds Formed Type of Bond Bond Energy (KJ/mole) Number of Bonds Total (KJ/mole) Type of Bond Bond Energy (KJ/mole) Number of Bonds Total (KJ/mole) C-H 412 7 2884 C=O 802 6 4812 C-C 348 2 696 H-O 463 8 3704 O=O 496 5 2480 C-O 366 1 366 O-H 463 1 463 Total 6889 Total 8516 Table 5: Shows the theoretical heat change in enthalpy for Propanol From the above results‚ the theoretical change
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Clausius was the first to formulate the second law in 1850. His statement was that “no machine whose working fluid undergoes a cycle can absorb heat from one system‚ reject heat from another‚ and produce no effect”. Following these came about another statement made by Kelvin and Plank which said “no heat engine whose working fluid undergoes a cycle can absorb heat from one reservoir‚ deliver an equal amount of work and deliver no other effects”. One example of the second law of thermodynamics is when
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Fenestration as the effective strategies to achieve thermal comfort and reduce heat gain in Phase l of Belum Rainforest Resort‚ Pulau Banding‚ Perak. Asian Architecture [ARC 2213/2234] PROJECT 1: CASE STUDY Fenestration as the effective strategies to achieve thermal comfort and reduce heat gain in Phase l of Belum Rainforest Resort‚ Pulau Banding‚ Perak. NAME: KEE TING TING STUDENT ID: 0310019 LECTURER: MS. SHARIANNE MOHD. SHAH SUBMISSION DATE: 11 NOVEMBER 2014 ARC 2213/2234 Asian Architecture
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