A solution is made by adding 27 g of barium chloride into 74 g of water. What is the mass percentage of this barium chloride in this solution, to the units place?

27 %

Explanation:

Step 1: Given data

Step 2: Calculate the mass of the solution

The mass of the solution is equal to the sum of the mass of the solute and the mass of the solvent.

m = 27 g + 74 g = 101 g

Step 3: Calculate the mass percentage of this barium chloride in this solution

We will use the following expression.

%m/m = mass of barium chloride / mass of solution × 100%

%m/m = 27 g / 101 g × 100%

%m/m = 27 %

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error