Energy and reactions


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Unformatted text preview: to use in other tasks (reactions) See types of work slide Summary: Organisms obtain Summary: useful energy from light or by oxidizing substrate molecules found in the environment Fig 8.6 Exergonic or spontaneous reactions vs. Endergonic or nonspontaneous reactions Enthalpy: H Enthalpy: • H iis the energy stored in the system or s a molecule molecule • Heat content of bonds in a compound • ∆ H = Hproducts - Hreactants • When ∆ H iis negative, heat is given off s When exothermic exothermic • When ∆ H iis positive, endothermic s When endothermic 2nd Law of Thermodynamics: Entropy is always increasing in a is...
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This document was uploaded on 03/26/2014 for the course BIOLOGY BIO101 at Tulane.

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