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OpenStudy (anonymous):
In chemistry class, how much 30% HCL acid must you add to 100 ml of 5% HCL acid to get a solution of 15% HCL acid?
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OpenStudy (amistre64):
100 + A = B 100(.05) + A(.30) = B(.15) you have a system of 2 equations in 2 unknowns .... solve for A
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