750 ml of water was added to a solution of 150 ml with a concentration of 98%. What is the concentration of the new solution?

To solve this problem, you first need to find the weight of the substance in the initial solution.

To do this, multiply the mass of the solution by the percentage.

Will be:

150 * 98% / 100% = 150 * 0.98 = 147 grams.

Find the new weight of the solution.

To do this, add the weight of water to the initial weight of the solution.

We get:

150 + 750 = 900 ml.

Finding concentration.

To do this, divide the weight of the substance by the mass of the solution and multiply by 100%.

We get:

147/900 * 100% = 0.1633 * 100% = 16 1/3%.

Answer: The new concentration of the solution is 16 1/3%.