You need 455 mL of a 5% alcohol solution. On hand, you have a 65% alcohol mixture. How much of the 65% alcohol mixture and pure
water will you need to obtain the desired solution?
You need :
___ ml of pure water
And
___ ml of the 65% solution
1 answer:
Answer:
You need: 420 mL pure water and 35 mL of the 65% solution
Step-by-step explanation:
let 65% alcohol mixture = x mL
y = water
x + y = 455
0.65x / 455 = 0.05
0.65x = 22.75
x = 35
recall, 35 + y = 455
y = 420
You need: 420 mL pure water and 35 mL of the 65% solution
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