In a bioreactor, anaerobic grain fermentation takes place, in which the yeast Saccharomyces cerevisiae metabolizes glucose (C6H1206) to form the products ethanol and propionic acid (C2H3CO2H),...

Question about mass and energy balances:

Extracted text: In a bioreactor, anaerobic grain fermentation takes place, in which the yeast Saccharomyces cerevisiae metabolizes glucose (C6H1206) to form the products ethanol and propionic acid (C2H3CO2H), according to the following reactions: C6H1206 -> 2C2H5OH + 2CO2 C6H1206 -> 2 C2H3CO2H + 2H2O In this process, the tank is initially loaded with 4000 kg of a 12% glucose solution in water. After fermentation, 120 kg of CO2 were produced and 90 kg of unconsumed glucose remained in the wort. What is the mass percentage of ethanol and propionic acid in the wort at the end of the fermentation process? The yeast mass in the wort is negligible.