Write the following as an expression: How much water do I need to add to l liters of pure alcohol to obtain a solution of 45% al cohol? The answer is an EXPRESSION, not an actual answer!! WILL MARK BRAINLIST!!!
1 answer:
Answer:
see below
Step-by-step explanation:
amount of water w
l liter of pure alcohol = 100% alcohol
solution is 45 % percent alcohol
total amount of fluid is w+l
(w+l)( .45) = l*.100
Distribute
.45w + .45 l = 1l
.45 w = 1l - .45l
.45 w = .55l
w = .55l / .45
w =11/9 l
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