Mass Percentage of Methyl Alcohol in a Solution

To calculate the mass percentage of methyl alcohol in a solution, we need to consider the mass of methyl alcohol and the total mass of the solution.

Given information:
- Mass of methyl alcohol = 15 g
- Volume of solution = 100 ml
- Density of solution = 0.90 g/ml

Step 1: Calculate the mass of the solution
The mass of the solution can be calculated using the density formula:
Mass = Density × Volume
Mass of the solution = 0.90 g/ml × 100 ml = 90 g

Step 2: Calculate the mass of methyl alcohol as a percentage of the total mass of the solution
Mass percentage of methyl alcohol = (Mass of methyl alcohol / Mass of the solution) × 100

Substituting the given values:
Mass percentage of methyl alcohol = (15 g / 90 g) × 100 = 16.67%

Hence, the mass percentage of methyl alcohol in the solution is 16.67%.

Explanation:
The mass percentage of a component in a solution represents the proportion of that component's mass compared to the total mass of the solution. In this case, we are calculating the mass percentage of methyl alcohol in the solution.

To calculate the mass percentage, we need to know the mass of methyl alcohol and the total mass of the solution. The mass of the solution can be determined by multiplying the density of the solution by its volume. Once we have the mass of the solution, we can calculate the mass percentage of methyl alcohol by dividing the mass of methyl alcohol by the mass of the solution and multiplying by 100.

In this example, the mass of methyl alcohol is given as 15 g. The density of the solution is given as 0.90 g/ml, and the volume of the solution is given as 100 ml. Using the density formula, we can calculate the mass of the solution as 90 g. Substituting these values into the mass percentage formula, we find that the mass percentage of methyl alcohol in the solution is 16.67%.

The mass percentage is a useful measure to determine the concentration of a solute in a solution. It is often used in various applications such as chemistry, pharmacy, and industry.

Answeris16.67