Question

How many grams of sodium bromide are in 500 grams of solution that is 30% sodium bromide by mass?​

Answer 1

150g

Explanation:

Mass of solution = 500g

Percentage by mass of NaBr = 30%

Unknown:

Mass of NaBr in the solution = ?

Solution:

A solution is a homogeneous mixture made up of solutes dissolved in a solvent.

The solute is usually the substance that is solvable in another.

When a substance in another, it contains that amount per volume of the whole solution.

Now the mass of solution is 500g

 Concentration = Percentage of NaBr in it = 30%

The mass of NaBr = percentage of NaBr x mass of solution

 Mass of NaBr = $\frac{30}{100}$ x 500 = 150g

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