Question 171171
Evaluate the concentration of the alcohol in the solution if it consists of 14 gallons of pure water and 14 gallons of alcohol (in percentage terms; round to 2 decimal places).
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14 gal alcohol / 14x10^6 water = 1/10^6 = [1/10^4]/[10^2] 
= 0.0001% or [1/10,000]%

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Cheers,
Stan H.