sodium chloride has a molar mass of 58.4g/mole. how many grams of sodium chloride are needed to make 500.mL of a 0.0250 molar solution?
.025 moles/L * 0.5L = .0125 moles NaCl
so, how many grams is that?
To find out how many grams of sodium chloride are needed to make a 0.0250 molar solution, you will need to use the formula:
Mass = Molar mass × Volume × Molarity
First, convert the volume from milliliters to liters since molarity is expressed in moles per liter:
Volume = 500 mL = 500/1000 L = 0.5 L
Next, plug in the values into the formula:
Mass = 58.4 g/mol × 0.5 L × 0.0250 mol/L
Now, calculate the mass:
Mass = 0.73 g
Therefore, you would need 0.73 grams of sodium chloride to make a 500 mL solution with a molarity of 0.0250 mol/L.