Use the following reaction to answer the question below: 2NH₃(g) + CO₂(g) → (NH₂)₂CO(aq) + H₂O(l).
In this process, if 637.2g of NH₃ are treated with 1142g of CO₂, which of the two reactants is the limiting reactant in moles?
a) NH₃
b) CO₂
c) Both are in excess
d) Cannot be determined