Peroxide

How many ml should we pour 30% of peroxide (H2O2) into 100ml H2O to give a 20% solution?

Correct answer:

x =  200 ml

Step-by-step explanation:

0.30 x=0.20(x+100)  0.30 x=0.20 (x+100)  0.1x=20  x=0.120=200  x=200=200 ml



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