Delta G and me

[wolfie23b]

I have tried and tried to find the answer to this and am dumbfounded. Although it is probably elementary to most.

The question is:

Why is Delta G -686 k/cal per mol of glucose.

I do not want the answer directly just a place to go so I can get the answer myself.
Please help. Guide oh science GURU's

[wolfie23b]

Ok, let me ask this, does the question mean that it takes -686 kcal/mol of glucose to break the covalent bond in glucose?

[MichaelXY]

The chemical formula for respiration is something like;
C6H12O6 + O2 ----> CO2 + H2O + Energy

So the 698Kcal number is not energy used, rather energy created or available.