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A student needs to find the enthalpy of polymerization of ethylene from the enthalpies of combustion of ethylene gas (-1411 kJ/mol) and polyethylene (-5120 kJ/mol). Calculate the enthalpy change, in kJ/mol, for the polymerization of ethylene gas to form polyethylene.
answered
Jan 22
in
ThermoChemistry
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66
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Please compare major depressive disorder and persistent depressive disorder.
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Jan 20
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Psychology
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23
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What is the name for a heterotroph that eats only or mainly animal foods?
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Jan 7
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Science
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62
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What event occurs between the two solstices?
answered
Jan 6
in
Science
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39
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What do you call an abnormal mass of cells that is dividing improperly?
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Jan 6
in
Science
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21
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The lighter photic zone and darker aphotic zone are determined by what?
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Jan 2
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Science
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41
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Soluble minerals and clays accumulate in what soil layer, allowing it to hold more water?
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Dec 31, 2024
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Science
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22
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Sexually reproducing organisms alternate between which stages?
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Dec 31, 2024
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Science
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