Alternatives to Gasoline in Vehicles One of the most pressing issues in today’s society both climatically and economically is the use of gasoline and fossil fuels in our vehicles. Ever since the creation of the automobile in the early 1900s gasoline has become a commodity that helps the global economy tremendously. However‚ after over one hundred years of the use the resource has come to be scarcer‚ and all of the greenhouse gases and pollution that were released have helped set in motion the
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calcium cations that are present in both water and plant cells. 2.)For farmers‚ soil acidification on their land can be a major problem. What is soil acidification‚ how is it caused and how is it prevented? Soil acidification is the build up of hydrogen ions(H+)‚ reducing the pH‚ therefore the soil becomes too acidic. The donor can be an acid‚ such as nitric acid and sulfuric acid.The addition of the acids can be due to acid rain and pollution. Many nitrogen compounds‚ which are added as fertilizer
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What is hairspray made of? Hairspray is a solution of long‚ chainlike molecules (called polymers) in a very volatile solvent. Spraying deposits a stiff layer of the polymer on your hair after the solvent evaporates. The solvent used was once a compound of carbon‚ fluorine‚ and chlorine (a chlorofluorocarbon‚ or CFC). CFCs are nontoxic‚ nonflammable‚ and make almost ideal aerosol propellants. But when it was learned that they causedestruction of stratospheric ozone‚ they were replaced with other
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temperatures in the fractional column. My sources have told me that hydrocarbons are chemical compounds composed of only carbon atoms and hydrogen atoms. Each hydrocarbon has a different boiling point. This is handy because they use the different boiling points to separate the hydrocarbons. Its products can be used in many forms such as petrol can be used in vehicles such as cars which helps give the car energy to make it move. It is the fuel in the car engines. Another
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similar number of carbon atoms and physical properties. The uses of the fractions depend on their physical and chemical properties. www.igcse.at.ua Hydrocarbon molecules are only made of a chemical combination of carbon and hydrogen atoms. They are compounds because they consist of atoms of atleast two different elements. THE FRACTIONAL DISTILLATION OF CRUDE OIL www.igcse.at.ua Crude oil is a complex mixture of mainly hydrocarbon compound molecules
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Vehicles are the major source of air pollution in the urban areas. Vehicular exhaust‚ a by-product of fuel combustion contains potentially lethal chemical compounds such as carbon monoxide‚ oxides of nitrogen and sulphur and unburnt hydro carbons. Vehicular pollution traces its source to fossil fuels that are burnt in mobile sources (all categories of motorized vehicles). During the past few years‚ various steps have been taken to reduce vehicular emissions and its effect is evident
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Oakland Schools Chemistry Resource Unit Intermolecular Forces Brook R. Kirouac David A. Consiglio‚ Jr. Southfield‐Lathrup High School Southfield Public Schools Bonding: Intermolecular Forces Content Statements: C2.2: Chemical Potential Energy Potential energy is stored whenever work must be done to change the distance between two objects. The attraction between the two objects may be gravitational‚ electrostatic‚ magnetic‚ or strong force. Chemical potential energy is the result
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Symbol H+ Li+ Na+ K+ Rb+ Cs+ Be2+ Mg2+ Ca2+ Sr2+ Ba2+ Ra2+ Zn2+ Symbol Cu+ Cu2+ Fe2+ Fe3+ Sn2+ Sn4+ Cr2+ Cr3+ Mn2+ Mn3+ Symbols and Charges for Monoatomic Ions Name Symbol Name hydrogen ion H¯ hydride lithium ion F¯ fluoride Note that the sodium ion Cl¯ chloride letters in an ion’s potassium ion Br¯ bromide name before the rubidium ion I¯ iodide -ide ending is 2¯ cesium ion O oxide the stem. For 2¯ beryllium ion S sulfide example‚ the stem
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* MORE IMPORTANT TO HAVE A LOW BOND THAN BRANCH * -ene (double bond)‚ -yne (triple bond)‚ -anol (oxygen then hydrogen)‚ chloro/bromo/fluoro/iodo- (halogen)‚ amino- (nitrogen)‚ -anoic acids (one oxygen with a single‚ one with a double bond) * If there is a double or triple bond write it just before ene or yne. Eg. But-2-ene * If naming an alcohol (an oxygen and a hydrogen)‚ if there is a double or triple bond‚ -anol becomes‚ for example‚ -ene-2-ol or –yne-3-ol * Make sure you write
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boiling point of CH 4 is much lower than that of HF. Which ONE of the following best explains this difference in boiling points? A HF molecules are more polar than CH 4 molecules. B CH 4 molecules are more polar than HF molecules. C There are hydrogen bonds between HF molecules. D There are dipole-dipole forces between CH 4 molecules. (2) The temperature (in kelvin) of a fixed mass of an enclosed gas is given as T. Which ONE of the following CORRECTLY represents the new temperature if both
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