Answer:
0.92% NaCl
Explanation:
To find the weight percent (aka. mass percent), you need to use the following equation:
mass of solute (g)
Mass Percent = --------------------------------- x 100%
mass of solvent (g)
In this case, NaCl is the solute and water is the solvent. You can plug the given values into the equation and solve for the mass percent.
4.6 g NaCl
Mass Percent = ------------------------ x 100%
500 g H₂O
Mass Percent = 0.0092 x 100%
Mass Percent = 0.92%
