How do you prepare a 12 percent NaCl solution?

Ingredients:

- Sodium Chloride (NaCl) - 12 grams (g)

- Distilled Water - 100 milliliters (mL)

Instructions:

Step 1: Gather the necessary equipment, including a kitchen scale, a measuring cylinder or graduated cylinder, and a clean container (such as a glass jar or beaker) that can hold at least 100 mL of liquid.

Step 2: Measure 12 grams of Sodium Chloride (NaCl) using the kitchen scale. Ensure the scale is set to measure in grams.

Step 3: Measure 100 mL of distilled water using the measuring cylinder or graduated cylinder. Make sure to read the measurements at eye level to ensure accurate volume.

Step 4: Pour the measured distilled water into the clean container.

Step 5: Add the 12 grams of Sodium Chloride (NaCl) to the container containing the distilled water.

Step 6: Stir the mixture thoroughly using a spoon or stirrer until the Sodium Chloride is completely dissolved. This may take a few minutes.

Step 7: Once all the Sodium Chloride is dissolved and the solution is clear without visible particles, your 12 percent NaCl solution is ready to use.

Remember to label the container appropriately with the solution's concentration (12% NaCl) and the date of preparation. It's important to store the solution properly, preferably in a cool, dry place, and use it within a reasonable time frame to ensure its quality.