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When salt and water are combined, they form a salt or saline solution. How much ml of water must be added to 150 mL of an 80% saline solution to produce a 30% saline solution?

Respuesta :

whitneytr12

Answer:

We must add 400 ml of water.

Step-by-step explanation:

We can use the following equation:

[tex]C_{i}V_{i}=C_{f}V_{f}[/tex]

Where:

  • C(i) is the initial concentration of the solution (80%)
  • C(f) is the final concentration of the solution (30%)
  • V(i) is the initial volume (150 ml)
  • V(f) is the final volume

Now, we just need to solve the equation for V(f).

[tex]V_{f}=\frac{C_{i}V_{i}}{C_{f}}[/tex]

[tex]V_{f}=\frac{80*150}{30}[/tex]

[tex]V_{f}=400\: ml[/tex]

Therefore, we must add 400 ml of water.

I hope it helps you!

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