Question 727123
A chemist needs to produce a 60% acid mixture. She has 25% strength solution and 80% strength solution on hand.
Rounding to the nearest thousandth (3 decimal places; nearest mL), how many liters of 80% solution does she add to create 1 liter of the 60% strength mixture?
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Equation:
acid + acid = acid
0.25x + 0.80(1-x) = 0.60*1
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25x + 80 - 80x = 60
-55x = -20
x = 4/11 liter (amt. of 25% solution needed)
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1-4/11 = 7/11 liter (amt of 80% solution needed)
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Cheers,
Stan H.
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