SOLUTION: barbie likes her hair blonde; unfortuately blonde hair doenst grow out of her head. to get her desired color she mixes 1.5oz of really blonde which is 15% hydrogen peroxide with 2o

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Question 428780: barbie likes her hair blonde; unfortuately blonde hair doenst grow out of her head. to get her desired color she mixes 1.5oz of really blonde which is 15% hydrogen peroxide with 2oz of baby blonde which is 8% hydrogen peroxide. what is the concentration of the final mixture?
Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
(1.5x.15)+(2x.08)=.225+.16=.385
.385/3.5=.11 or 11% concentration..