Calculate the Percent by Mass of Potassium Nitrate in a Solution

question 18

Multiple Choice

Calculate the percent by mass of potassium nitrate in a solution made from 45.0 g KNO₃ and 295 mL of water at 25ºC. At this temperature, the density of water is 0.997 g/mL.

• A) 1.51%
• B) 7.57%
• C) 13.3%
• D) 15.2%
• E) 86.7%