Treat this as a dimensional analysis problem: we are converting 0.400 mol glucose to mol carbon dioxide, and the conversion factor is the coefficients in the balanced chemical equation. We see that glucose is related to CO2 by a 1:2 ratio, so converting mol glucose, we have
again, treat this as a dimensional analysis problem...
we convert g C2H5OH --> mol C2H5OH --> mol C6H12O6 --> g C6H12O6
note that the only new thing here is the mol -mol conversion - just use the stoichiometric coeffiecients in the balanced equation.
The beauty thing about the balanced equation is that we can convert moles of any species to moles of any other species provided we have the stoichiometric coefficients. Here, we will go