how would a chemistry student make a 600 mL of 1.5 M solution of NaBr?

To create a 1.5 M solution of NaBr with a volume of 600 mL, you would need to follow these steps:

Step 1: Calculate the number of moles of NaBr needed.
To find the number of moles, you can use the formula:
moles = molarity x volume (L).
The volume must be converted to liters, so divide 600 mL by 1000 to convert it to liters:
Volume = 600 mL ÷ 1000 = 0.6 L.
Now, you can plug in the values to find the moles:
moles = 1.5 M x 0.6 L = 0.9 moles.

Step 2: Determine the molar mass of NaBr.
The molar mass of NaBr can be found by adding the atomic masses of sodium (Na) and bromine (Br). Sodium (Na) has an atomic mass of 22.99 g/mol, and bromine (Br) has an atomic mass of 79.90 g/mol.
Molar mass of NaBr = 22.99 g/mol + 79.90 g/mol = 102.89 g/mol.

Step 3: Calculate the mass of NaBr needed.
To calculate the mass, you can use the formula:
mass = moles x molar mass.
Plug in the values:
mass = 0.9 moles x 102.89 g/mol = 92.61 grams.

Step 4: Dissolve the calculated mass of NaBr in enough water to make a total volume of 600 mL.
Weigh out 92.61 grams of NaBr using a balance, and place it in a container. Add some water to the container and gently swirl it until the NaBr is dissolved completely. Finally, you can carefully add more water (if needed) to reach a final volume of 600 mL.

Remember to handle chemicals and use appropriate safety precautions while working in a laboratory setting.