In volcanic regions of the earth, the hot rock is relatively close to the surface. Also in such regions sometimes, the natural groundwater comes in contact with the hot rock and the heated water or steam may find its way to the surface through natural steam vents. In such regions, holes can be drilled into the hot rock groundwater structure and make the rising steam to drive turbo generators to produce electric power. Uses: We utilise this type of heat for power generation. For developing countries, the overall' projected potential was estimated at 400x1018 joule for geothermal energy with the projected capacity in 1990.
When air (oxygen) is in contact with combustible material (fuel) at a high enough temperature, a fire begins. Water, the most common extinguishing agent used in urban areas by firefighters, reduces the temperature of fuel below it's ignition point. Consider that a bucket of water will put out a small campfire by cooling the burning fuel (wood) below the point of combustion. By the way, there is a chemistry term for the point at which a chemical reaction begins: activation energy. (As you can guess, different fuels begin burning at different temperatures.)
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.
This process is fractional distillation. c) Some properties of hydrocarbons depend on the size of their molecules. These properties influence how hydrocarbons are used as fuels. boiling points viscosity flammability. C1.4.3 Hydrocarbon fuels Additional guidance: a) Most fuels, including coal, contain carbon and/or hydrogen and may also contain some sulfur.
In a catalytic converter, the catalyst (in the form of platinum and palladium) is coated onto a ceramic honeycomb or ceramic beads that are housed in a muffler-like package attached to the exhaust pipe. The catalyst helps to convert carbon monoxide into carbon dioxide. It converts the hydrocarbons into carbon dioxide and water. It also converts the nitrogen oxides back into nitrogen and oxygen. Green Living Image Gallery A large pile of platinum lined catalytic converters.
According to Hopkins (2006), photosynthesis is the process by which green plants and certain organisms transform itself from light energy into chemical energy. As a straight forward chemical reaction in which carbon dioxide comes from the air, along with the midair and water from the soil, photosynthesis conglomerates to produce what is known as carbohydrate (p. 6). Solar Energy produced by photosynthesis, stores itself in a chemical bond of a carbohydrate molecule. Sugar known as glucose is then formed which becomes convenient both by way of energy to be stored for later use in tissues or by way of carbon to be used for cells (p.7). Hopkins, w. G. (2006).
An intermediate known as refined iron, refined metal, and refined iron. 5. Iron was used to fuse with carbon to make steel through the foundry. It is also used for the steam ship
A reaction in which a substance reacts with oxygen and produces water as one of the products is often referred to a s Combustion reaction. Identify the combustion reactions from the reactions shown on this worksheet. 22. Acid-base (or neutralization) reactions are recognized by the presence of an acid in the reactants, and water in the products. Identify the acid-base reactions from the reactions shown on this worksheet.
The specific heat constant for water, 4.184 J/g C, is used for this equation. The specific heat can be found by using The Law of Dulong and Petit: Eq. 3 Cs(aluminum) = slope x 1/atomic weight This equation is used to find specific heat from the graph that will be drawn based on the results of the metal specific heats. II. Materials and Procedure See General Chemistry 101/102 Laboratory Manual (pg.
Fossil Fuels Report What are Fossil Fuels? The Combustion of fossil fuels Fossil fuels are made up of hydrocarbons which are compounds that contain the elements hydrogen and carbon. Examples are methane, CH4, propane, C3H8 and butane, C4H10. Hydrocarbons readily burn or undergo combustion reactions. Combustion may be complete or incomplete.