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bekas [8.4K]
3 years ago
10

How much of 10% HCl and 35% HCl would be needed to mix and produce 60 liters of 25% HCl?

Mathematics
2 answers:
andreyandreev [35.5K]3 years ago
8 0

Answer:

about 36 and 24 liters  

Step-by-step explanation:

    a+b = 60     1

let A multiplied by  10 percent and B multiplied by 35 percent then

  10 a + 35 b = 1500 ( 60 * 25 ) 2

add no. 1 to 2 and multiply no.1  by -10

-10 a+ -10 b = -600

10 a+ 35 b = 1500  adding

then     25 b = 900 then         b = 36 liter

then     a = 24 liter    

     

puteri [66]3 years ago
5 0

Answer:

<em>Equation: </em>

<em>HCL + HCL = HCL </em>

<em><u>0.30x + 0.45(50-x) = 0.35*50 </u></em>

<em><u>Multiply thru by 100 to get: </u></em>

<em><u>30x + 45*50 - 45x = 35*50</u></em>

<em><u>-15x = -10*50 </u></em>

<em><u>x = (2/3)50 </u></em>

<em><u>x = 33 1/3 liters (amt. of 30% solution needed in the mixture) </u></em>

<em><u>50-x = 16 2/3 liters (amt. of 45% solution needed in the mixture) </u></em>

=============

Step-by-step explanation:

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