Final answer:
To prepare 500 cm³ (0.5 L) of a 0.01 M NaCl solution, you need 0.2922 grams of sodium chloride, using the molar mass of NaCl which is 58.44 g/mol.
Step-by-step explanation:
Calculating Mass of Sodium Chloride for a Solution
To calculate how much sodium chloride (NaCl) is needed to prepare a 0.01 M solution in 500 cm³ (or 0.5 L), we can use the formula:
mass = molarity × volume × molar mass
First, convert the volume from cm³ to L by dividing by 1000:
500 cm³ = 0.5 L
The molar mass of NaCl is approximately 58.44 g/mol. Now, plug the values into the formula:
mass = 0.01 mol/L × 0.5 L × 58.44 g/mol
mass = 0.2922 g of NaCl
So, you would need 0.2922 grams of NaCl to prepare 500 cm³ of a 0.01 M NaCl solution.