3,2mol * 2 = 6,4mol of C atoms
The nature of reactants, temperature, concentration, surface area and catalysts.
Answer:
The answer is C. Hope this helps you out!
I'm assuming that you are asking a general question because you did not include an example.
The limiting reagent is the item in the reactants (reagents) that will run out first. This is because it limits what the reaction can produce, essentially causing the leftover elements/compounds to just sit there.