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Marisol Young
Chemistry
28 August, 16:20
Define the standard heat of formation of mgco3
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Amir
28 August, 16:34
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The standard heat of formation is the energy change that occurs when 1 mole of a substance is made from its elements in their standard states (most stable form of the element at 1 bar of pressure and the specified temperature, usually 298 K or 25 degrees Celcius)
E. g for MgCO3
Mg (s) + C (s) + 3/2 O2 (g) = MgCO3
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