Calculate the AH for the following balanced reactions. rxn
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Remember the AH is for the reaction written.
the
1) Fe, O3 (5) + 2 AL 6 ALO3(s) + 2 Fe (3)
2) 2 C, H6 + 7 02 4 CO, + 6 H2O

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In an exothermic reaction the bonding energy of the product is: less than the reactants same as the reactants greater than the reactants dependent upon the presence of a catalyst

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.