snip >I can give you the stoichoimetric equation for glucose no probs: C6H12O6 >(glucose) + 6H2O ----> 6CO2 + 6H2O. i.e. for every one molecule of glucose Whoops! Should really proof these before I hit send! C6H12O6 (glucose) + 6O2 ----> 6CO2 + 6H2O. Sorry, Gus