If 24.3 grams of an aqueous solution of aluminum iodide, AlI3, contains 6.56 grams of aluminum iodide, what is the percentage by mass of aluminum iodide in the solution?
To find the percentage by mass of aluminum iodide in the solution, you need to divide the mass of the aluminum iodide by the total mass of the solution and then multiply by 100.
1. Calculate the total mass of the solution: Given that the solution contains 24.3 grams, the total mass of the solution is 24.3 grams.
2. Calculate the percentage by mass of aluminum iodide: Divide the mass of the aluminum iodide (6.56 grams) by the total mass of the solution (24.3 grams) and multiply by 100:
(6.56 grams / 24.3 grams) * 100 = 26.98%
Therefore, the percentage by mass of aluminum iodide in the solution is approximately 26.98%.