What is the mass of copper produced if 4.87 g of #Al# reacts with copper sulfate in the reaction #2Al + 3CuSO_4 -> Al_2(SO_4)_3 + 3Cu#?
From the equation, we know that
You have given the stoichiometry. It explicitly says that 3 moles of copper salt are reduced per 2 moles of aluminum oxidized. So simply multiply the molar quantity of aluminum by