A solution of 300 g contain MgCl2 worth 25 g. Find the Mass Percent of Magnesium Chloride

1. Break Down the Problem

To find the mass percent of Magnesium Chloride (MgCl₂) in the solution, we need to determine the ratio of the mass of MgCl₂ to the total mass of the solution and then convert that ratio into a percentage.

2. Relevant Concepts

The formula for mass percent is given by: $\text{Mass Percent} = \left( \frac{\text{mass of solute}}{\text{total mass of solution}} \right) \times 100$ Where:

• Mass of solute = mass of MgCl₂ = 25 g
• Total mass of solution = 300 g

3. Analysis and Detail

Using the formula:

• Mass of solute = 25 g
• Total mass of solution = 300 g

Plugging these values into the formula: $\text{Mass Percent} = \left( \frac{25 \, \text{g}}{300 \, \text{g}} \right) \times 100$

Calculating the ratio: $\frac{25}{300} = 0.0833$ Now converting it to a percentage: $0.0833 \times 100 = 8.33\%$

4. Verify and Summarize

Our calculations show that the mass percent of Magnesium Chloride in the solution is approximately 8.33%.

Final Answer

The mass percent of Magnesium Chloride (MgCl₂) in the solution is 8.33%.