(Solution) - High cost and limited availability of a reactant often dictate -(2025 Original AI-Free Solution)

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High cost and limited availability of a reactant often dictate which reactant is limiting in a particular process. Identify the limiting reactant when the reactions below are run, and come up with a reason to support your decision.
a. Burning charcoal on a grill:
C(s) + O2(g) ? CO2(g)
b. Burning a chunk of Mg in water:
Mg(s) + 2H2O(l) ? Mg(OH)2(aq) + H2(g)
c. The Haber process of ammonia production:
3H2(g) + N2(g) ? 2NH3(g)