Tammy Thanaporn Amornkasemwong 1st September 2011 Science Period 8 Introduction: How much energy can be released from fuels? Combustion is the process of burning fuel in order to produce heat. The intention of this experiment is to find whether different fuels produce different amount of energy. In the process of combustion in this experiment, cheeto, half a cashew nut, wax candle and ethanol are used as fuels combust with lighter, as heat and oxygen. When the fuels combust, oxygen and fuels react, and heat released.
Describe the appearance of the flame when the air vents are opened. When the air vents (collar) are opened, the air mixes with the gas and makes a more complete combustion reaction. This results in a hotter reaction, with a light blue colored flame. 6. What apparatus is used in this demo to test how hot the flame is?
Fossil fuels like the substance sulfur dioxide products are burnt to heat water under pressure , making them steam. This high pressure steam is used to spin the turbine generators which make electricity although this method is not really used anymore now. 5.) What are the potential hazards for using this resource? The potential hazards for using sulfur dioxide is it can affect our environment, plants, animals, the air that we breathe, our water resources and our planet.
Can you prove that the candle needs oxygen in order to burn? 3. Can you prove that the candle produces carbon dioxide when it burns? 4. Can you prove that the candle produces water when it burns?
4. The products of a burning candle are carbon dioxide and water. 5. wax(vapor) + oxygencarbon dioxide + water Reactants Products Conclusion: From this lab, I learned that wax burns in a vapor state. Fire requires fuel and oxygen in order to burn. The products of a combustion reaction are carbon dioxide and water.
Calculations involving the Mole, Avogadro’s Number, Molar Mass, Mole-Mole and Mass-Mole calculations in chemical equations. Combustion analysis and calculation of empirical and molecular formulas from composition analysis. Electrolytes and non-electrolytes. Precipitation reactions and solubility rules. Writing balanced molecular equations and net ionic equations.
This is done by a procedure called refluxing. Refluxing is the process of heating a product to the boiling point and re-condensing the vapor continuously. The procedure halogenation is the addition of a halogen to a π bond forming a halo alkane. In this synthetic reaction bromine was used in the process called bromination. The bromine is acting first like an electrophile, and then after bromine has broken the π bond, a carbocation has formed, and a bromide ion has been created, the bromide ion then acts as the nucleophile and forms a bond with the carbocation.
4. Howell iron works purchased came with a furnace which was named Howell Iron works then traditionally pig iron would be worked into wrought iron in finery forges and later putting the furnaces more recently into steel. In these processes, pig Iron is melted and a strong current of air is directed over it while it is being stirred or agitated. This cause the dissolved impurities to be thoroughly oxidized. An intermediate known as refined iron, refined metal, and refined iron.
Thermal runaway reaction occurs when the heat generated by a reaction goes beyond the heat removal caused by the available cooling capacity. Heat is accumulated leading to a gradual rise in the temperature of the reaction mass; this causes an increase to the rate of reaction and increases the speed of rate of heat generation. [1] Why are thermal runaway reactions dangerous on industrial scale? Thermal runaway reactions are always said to be dangerous on an industrial scale since the reactions go faster in an industry where they tend to reach higher temperatures. As you would already know that exothermic reactions tend to release quite a large amount of heat, so when the reaction mixture gets very warm, a very hot exothermic reaction begins.
2. Lava Flows is the lava that slide down the side of the volcano. The dangers of hot lava meeting the surface are streams that resulted from the boiling of the salt water and the instantaneously change to a crystal. The water temperature where lava meets water is 30 -69. Volcanic Gases 1.