Respuesta :
8 gallons pure alcohol should we add to 18 gallons of 35% acid solution to obtain a solution that is 55% alcohol.
Calculation:
Let the amount of pure alcohol (100%) required be X.
Therefore, 18 gallons at 35% mixed with X gallons at 100% will give (X + 18) gallons at 55% of alcohol.
It means, 18×35 + X×100 = (X +18) ×55
630 + 100X = 55X + 990
100X - 55X = 990 - 630
45X = 360
X = 360 ÷ 45
X = 8 gallons
Which alcohol is consider as pure alcohol?
An ethanol is a an alcohol which is consider as pure alcohol with molecular formula C2H6OH.
To learn more about pure alcohol here.
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