According to the following thermochemical equation, what mass of oxygen-O2 (in g) must react in order to produce 412 kJ of energy? 2C2H5OH(l) + 7O2(g) → 4CO2(g) + 6H2O(l) ΔH°rxn = -258 kJ
Added by Esther B.
Step 1
Since the given ΔH°rxn is for the entire reaction, we can divide it by the moles of O2 to find the energy produced per mole of O2. ΔH°rxn = -258 kJ (energy produced by the entire reaction) moles of O2 = 7 Energy produced per mole of O2 = -258 kJ / 7 moles = Show more…
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