Solve the problem.
-In a chemistry class, 3 liters of a 4% silver iodide solution must be mixed with a 10% solution to get a 6% solution. How many liters of the 10% solution are needed?
A) 3 L
B) 2.5 L
C) 1.5 L
D) 0.5 L

Question

Quizplus · Accepted Answer

To solve the problem, set up the equation based on the concentration of silver iodide:  (3 liters * 4%) + (x liters * 10%) = (3 + x) liters * 6%.  This simplifies to:  0.12 + 0.1x = 0.18 + 0.06x.  Solving for x gives x = 1.5 liters.

Solve the Problem. -In a Chemistry Class, 3 Liters of a 4% Silver