What is the %(w/w) of a salt solution prepared by dissolving 7.5 g of salt in 242.5 g of water?
A) 0.030%
B) 0.30%
C) 0.75%
D) 3.0%

Question

Quizplus · Accepted Answer

The %(w/w) is calculated by dividing the mass of the solute (salt) by the total mass of the solution (salt + water) and multiplying by 100. The total mass of the solution is 7.5 g + 242.5 g = 250 g. Thus, %(w/w) = (7.5 g / 250 g) * 100 = 3.0%.

What Is the %(W/w) of a Salt Solution Prepared by Dissolving