Calculate the mass of copper that can be obtained by reacting 5.4 g of aluminum with a solution of copper (II) chloride.

Let’s compose the equation for the reaction of interaction of aluminum with copper chloride:
2Al + 3CuCl2 = 2AlCl3 + 3Cu;

The molecular weight of aluminum is 27 g / mol. Let’s find the amount of substance in aluminum:
5.4 / 27 = 0.2;

There is a coefficient in front of copper that is 1.5 times greater than in front of aluminum. This means that the amount of substance in copper is 0.3 mol. The molecular weight of copper is 64 g / mol. Let’s find the mass of copper:
0.3 * 64 = 19.2 grams;

Answer: the mass of the formed copper is 19.2 grams.