SOLUTION: What volume of water must be added to 2 liters of 12% KCL to obtain a 4.0% KCL solution? what is the total volume of the solution?

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Question 788180: What volume of water must be added to 2 liters of 12% KCL to obtain a 4.0% KCL solution? what is the total volume of the solution?
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
To do this correctly, the densities may be needed. As an approximation, you can try this:
2%2A0.12%2F%282%2Bv%29=0.04
2%280.12%29=0.04%28v%2B2%29
2%2A12=4v%2B8
4v=24-8
4v=16
highlight%28v=4%29 liters