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Pure elements

In the absence of oxygen, glucose, C6H12O6(aq), can undergo fermentation producing ethanol, C2H5OH(l), and carbon dioxide, CO2(g), as represented by the following equation.
C6H12O6(aq) → 2C2H5OH(l) + 2CO2(g)
Assume the value of ∆f H° for C6H12O6(aq) is the same as the value of ∆f H° for C6H12O6(s).
 The enthalpy change associated with the fermentation reaction is?

What is tissue