Answer:
The answer to your question is 125 ml of the 40% solution and 875 ml of water
Explanation:
Data
Solution concentration = 40%
Final concentration = 5%
Final volume = 1 l
Formula
V₁C₁ = V₂C₂
Solve for V₁
V₁ = [tex]\frac{V2C2}{C1}[/tex]
V₁ = ?
C₁ = 40%
V₂ = 1 l
C₂ = 5%
Substitution, simplification and result
V₁ = [tex]\frac{(1)(5)}{40}[/tex] = 0.125 l = 125 ml
Conclusion
Take 125 of the 40% solution and add (1000 - 125) 875 ml of water
