what si the procedure to make a 0.10m solution of Potassium Hydroxide during a class lab?

How much do you want to make? about 1L?

m = moles/kg solvent.
m = 0.1 mol KOH/1000 g H2O
grams KOH = 0.1 mol x molar mass KOH = ??

We were told we had to use the equation (M1)(V1)=(M2)(V2).

i don't know if that helps.

To make a 0.10 M solution of Potassium Hydroxide (KOH) during a class lab, you will need the following steps:

Step 1: Calculate the amount of KOH required
In order to calculate the amount of KOH needed to make the solution, you will need to determine the molar mass of KOH, which is 56.11 g/mol. Multiply the desired molarity (0.10 M) by the desired volume of the solution (let's say 1 liter or 1000 mL) to get the number of moles required. The formula to calculate the amount of KOH is: Moles = Molarity × Volume (in liters). In this case, Moles = 0.10 M × 1 L = 0.10 moles.

Step 2: Weigh the required mass of KOH
Using the molar mass of KOH (56.11 g/mol) and the number of moles calculated in step 1 (0.10 moles), multiply the molar mass by the number of moles to find the required mass of KOH. The formula to calculate the mass is: Mass = Moles × Molar Mass. In this case, Mass = 0.10 moles × 56.11 g/mol = 5.611 grams.

Step 3: Dissolve KOH in water
Weigh out 5.611 grams of KOH using an analytical balance. Carefully add the KOH powder to a suitable container and add approximately 900 mL of distilled water to the container. Stir the solution gently until the KOH is completely dissolved.

Step 4: Adjust to final volume
After the KOH is fully dissolved, add more distilled water to bring the solution volume up to the desired final volume (1 liter or 1000 mL in this case). Use a graduated cylinder or a volumetric flask to accurately measure and add the additional water.

Step 5: Mix and verify
Thoroughly mix the solution by swirling or stirring it gently to ensure the KOH is evenly distributed throughout. Use a pH indicator paper or a pH meter to verify that the solution has a pH around 14, indicating the presence of a strong base.

Please note that handling chemicals and performing experiments should be done under the supervision of a knowledgeable instructor in a well-equipped laboratory. Safety precautions, such as wearing appropriate protective gear, should always be followed.