ASAP WILL MARK BRAINLIEST!!!!!!! A chemist needs to mix an 20% acid solution with a 50% acid solution to obtain 15 liters of a 34% ac

Question

ASAP WILL MARK BRAINLIEST!!!!!!!
A chemist needs to mix an 20% acid solution with a 50% acid solution to obtain 15 liters of a 34% acid solution. How many liters of each of the acid solutions must be used?

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Lyla 2 weeks 2021-09-09T13:04:59+00:00 2 Answers 0

Answers ( )

    0
    2021-09-09T13:06:43+00:00

    Answer:14

    Step-by-step explanation:

    0
    2021-09-09T13:06:54+00:00

    Answer:

    Step-by-step explanation:

    We are mixing two acids.

    x = liters of 20% acid solution

    y = liters of 70% acid solution

    x + y = 8    This represents the total number of liters

    and

    .2x + .7y = .5(8)   This represents the concentration of the solutions

    Since x+y=8, y = 8-x

    We can use substitution.

    .2x + .7(8-x) = 4

    .2x + 5.6 – .7x = 4

    Combining like terms

    -0.5x = – 1.6

    Dividing by -0.5

    x = 3.2

    There are 3.2 liters of the 20% solution to be mixed with 4.8 liters of the 70% solution.

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