Question

What is the strength ,expressed as a percent, of a 30-milliliter solution that contains 300 milligrams of sodium chloride

Answer 1

The strength of a 30-milliliter solution containing 300 milligrams of sodium chloride is 1% mass/volume percent.

Step-by-step explanation:

The strength of a sodium chloride solution refers to the concentration of the solute in the solution. To find the concentration in percent, the mass of the solute is divided by the volume of the solution and then multiplied by 100. Using the given values of 300 milligrams of sodium chloride in a 30-milliliter solution, we can calculate the strength as follows:

First, we convert milligrams to grams since the percent concentration is usually expressed with the solute in grams:

1. 300 milligrams = 0.300 grams (since 1000 milligrams = 1 gram).
2. Next, we divide the mass of the sodium chloride by the volume of the solution:
3. 0.300 grams NaCl / 30 milliliters solution.
4. Finally, we multiply by 100 to get the percent concentration:
5. (0.300 / 30) × 100% = 1%.

Thus, the strength of the solution, expressed as a percent, is 1% mass/volume percent (m/v %).