Two solutions were mixed. The mass of the first solution is 600 g, the salt concentration in it is 15%.

| April 29, 2021 | education

Two solutions were mixed. The mass of the first solution is 600 g, the salt concentration in it is 15%. The mass of the second solution is 240 g, the salt concentration in it is 50%. find the concentration of the mixture.

Before determining the concentration of the mixture, it is necessary to find the mass of salt in each solution.

We multiply the known weight of the solution by the percentage.

Will be:

600 * 15% / 100% = 600 * 0.15 = 90 g.

240 * 50% / 100% = 240 * 0.5 = 120 g.

Find the total weight of the salt.

120 + 90 = 210 grams.

Determine the weight of the mixture.

To do this, we sum up the mass of the first and second solution.

600 + 240 = 840 g.

We find concentration.

Divide the weight of the salt by the weight of the mixture and multiply it by 100%.

210/840 * 100% = 0.25 * 100% = 25%.

Answer: 25%.



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