SOLUTION: A chemist has one liter of a solution that is 90% acid. How much water must be added to make the resulting solution 45% acid?

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Question 394018: A chemist has one liter of a solution that is 90% acid. How much water must be added to make the resulting solution 45% acid?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
A chemist has one liter of a solution that is 90% acid. How much water must be added to make the resulting solution 45% acid?
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Equation:
acid + acid = acid
0.90*1 + 0*x = 0.45(1+x)
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Multiply 90 = 45 + 45x
45x = 45
x = 1 liter (amt. of water that must be added)
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Cheers,
Stan H.