Hydrochloric acid

Determine the concentration of which must have a solution of hydrochloric acid that mixes 10 l of the solution with 8 liters of 26% solution to get the solution with a concentration of 50%.

Final Answer:

x =  69.2 %

Step-by-step explanation:

V1​=10 l V2​=8 l  r2​=26%=10026​=5013​=0.26 r=50%=10050​=21​=0.5  V1​⋅ x/100+V2​⋅ r2​=r⋅ (V1​+V2​) 10⋅ x/100+8⋅ 0.26=0.5⋅ (10+8)  10x=692  x=10692​=69.2  x=5346​=69.2=69.2%

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You need to know the following knowledge to solve this word math problem:

statisticsalgebrabasic operations and conceptsUnits of physical quantitiesthemes, topicsGrade of the word problem

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