1. The problem statement, all variables and given/known data Okay, a while ago, I did a lab that had me get glucose osazone (C18-H22-N4-O4). Now, I am trying to calculate the theoretical mass of the osazone. The chemical equations goes as follows: C6-H5-N2-H3*HCl + Na-C2-H3-O2*H2-O ------> C6-H5-N2-H3 + H-C2-H3-O2 + Na-Cl + 3(H2-O) After that: C6-H12-O6 + 3(C6-H5-N2-H3) --------> C18-H22-N4-O4 + C6-H5-N-H2 + N-H3 + 2(H2-O) I found the limiting reactants in the first equation for Phenylhydrazine (C6-H5-N2-H3), but the thing is, in the second equation, 2 mols of phenylhydrazine gets used for osazone (C18-H22-N4-O4) and water, and the third mole decomposes into the ammonia (N-H3) and aniline (C6-H5-N-H2). So the part I am having trouble is, should I use the ration 2:1 from phenylhydrazine to osazone or keep the 3:1 ration in order to find the theoretical yield?