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| Where Do Fossil Fuels Come From? |
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Definition
Formed in the Carboniferous Period – part of the Paleozoic Era.
354 - 248 million years ago. |
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Definition
| form of potential energy…stored within the chemical bonds. Example: fuel burns, bonds break and reactant atoms reorganize |
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Definition
| energy of the position…it is stored. Provides energy. Example: coiled spring |
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Definition
KE is related to the motion
Potential Energy is transferred to Kinetic Energy |
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Definition
Endothermic – energy enters reaction on the reactant side
Exothermic – energy exits the reaction on the product side |
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Definition
| Systems that convert chemical energy > mechanical energy > thermal energy are highly inefficient |
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Term
| Generic formula for burning |
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Definition
| CnH2n+2 + O2 -> CO2 + H2O + energy |
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Term
| Specific Heat Capacity of H20 |
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Definition
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Term
| How is total heat (specific heat) calculated? |
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Definition
| Heat = mass of H20 heated x 4.184J/g/°C x change in water temp H = mcΔt |
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Definition
Heat released during burning - per gram of what you burned (fuel)
total heat
grams = J/g
Convert into KJ/g 1KJ = 1000J |
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Definition
Heat released during the burning of one mole of the substance
heat of combustion x molar mass of the fuel = molar heat of combustion |
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