Very well done!, ─
You know after A.) and B.), now C.) must follow:
So we need for C1.) all MW’s, and you write it just below each Educt and Product of your well found “Reaction Equation”.
After that you write for C2. ) all known masses of the Educts, but now translated into the corresponding Number of Moles under the MW’s.
Would you like to tell me the results of your line C2. )?