Question

Saline solutions, NaCl (aq), are often used in medicine. What is weight percent of NaCl in solution of 4.6 g of NaCl in 500g of water?​

Answer 1

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%