Answer:
Step-by-step explanation:
Part A
2 Al + 3 Cl_2 ==> 2 AlC_3
Part B
The balanced equation tells you for every 2 mols of Al you will produce 2 mols of AlCl_3
Find the mass of 1 mol of AlCl_3
Mass Al = 27
Mass 3Cl = 3*35.5 = 106.5 Add
Mass 1 mol AlCl_3 = 133.5
Answer: 2 mols of AlCl_2 = 267.0 grams