The volume of a 34.6% (by mass)solution is 129.0 mL.The density of the solution is 1.116 g/mL.What is the mass of solute in this solution?
A)144 g
B)49.8 g
C)416 g
D)40.0 g
E)94 g

Question

Quizplus · Accepted Answer

First, we need to find the mass of the solution:
mass of solution = volume × density = 129.0 mL × 1.116 g/mL = 144.03 g

Since the solution is 34.6% by mass, the mass of the solute can be found by:
mass of solute = 0.346 × 144.03 g = 49.8 g

Therefore, the answer is B.

The Volume of a 34