Solve.Chandra has 5 liters of a 18% solution of sodium hydroxide in a container. What is the amount and concentration of sodium hydroxide solution she must add to this in order to end up with 9 liters of 22% solution?
A. 4 liters of 28% solution
B. 4 liters of 25% solution
C. 4 liters of 27% solution
D. 4 liters of 30% solution
Answer: C
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