SOLUTION: A student mixed 50 ml of a 3% hydrogen peroxide solution with 30 ml of a 12% hydrogen peroxide solution. Find the percent concentration of the resulting mixture. Round to the neare

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Question 102182This question is from textbook
: A student mixed 50 ml of a 3% hydrogen peroxide solution with 30 ml of a 12% hydrogen peroxide solution. Find the percent concentration of the resulting mixture. Round to the nearest tenth percent. This question is from textbook

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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: A student mixed 50 ml of a 3% hydrogen peroxide solution with 30 ml of a 12% hydrogen peroxide solution. Find the percent concentration of the resulting mixture. Round to the nearest tenth percent.
:
Let x = the decimal amt of the resulting mixture
:
Write a simple decimal equation:
.03(50) + .12(30) = x(50 + 30)
:
1.5 + 3.6 = 80x
:
80x = 5.1
:
x = 5.1/80
:
x = .06375 * 100 = 6.4%