40 POINTS! 2NH3 + MgSO4 + 2H20 -> Mg(OH)2 + (NH4)2SO4

using the chemical equation above answer the following questions. SHOW ALL WORK OR RECEIVE NO CREDIT

A. If I have 4.6 moles of MgSO4 and 5.4 moles of NH3 which one is the limiting reactant? Show work for credit

B. What is the greatest amount of Mg(OH)2 that can be made with 4.6 moles of MgSO4 and 5.4 moles of NH3? Show work for credit

C. How many moles of the excess reactant is left over after the reaction has been completed? Show work for credit