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An aqueous solution of magnesium bromide has a concentration of 0.462 molal. What is the percent by mass of magnesium bromide in the solution?

Answer :

Final answer:

To find the percent by mass of magnesium bromide in the solution, first calculate the mass of magnesium bromide using the concentration and molar mass. Then use the mass of the solute and the mass of the solution to calculate the percent by mass.

Explanation:

The percent by mass of magnesium bromide in the aqueous solution can be calculated using the formula:

Percent by mass = (mass of solute / mass of solution) x 100

Given that the concentration of magnesium bromide is 0.462 molal, we can calculate the mass of magnesium bromide as follows:

mass of magnesium bromide = concentration x molar mass

Using the molar mass of magnesium bromide, we can then substitute these values into the percent by mass formula to find the answer.

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