anonymous
  • anonymous
A chemist mixes a 10% hydrogen peroxide solution with a 25% hydrogen peroxide solution to create 30 liters of a 15% hydrogen peroxide solution. How many liters of the 10% solution did the chemist use to make the 15% solution?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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Australopithecus
  • Australopithecus
System of equations problem, set up two equations and then find their intercept.
Australopithecus
  • Australopithecus
First equation will be from: A chemist mixes a 10% hydrogen peroxide solution with a 25% hydrogen to create a 15% hydrogen peroxide solution Second equation will be from: A chemist mixes two solutions to make 30L of final solution Set up two variables: x = litres of 10% H2O2 mixed y = litres of 15% H2O2 mixed
anonymous
  • anonymous
I got 20

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Australopithecus
  • Australopithecus
you are correct.
Australopithecus
  • Australopithecus
http://www.wolframalpha.com/input/?i=0.1x+%2B+0.25y+%3D+0.15%28x%2By%29%2C+x+%2B+y+%3D+30
Australopithecus
  • Australopithecus
if you want to check your answer
Australopithecus
  • Australopithecus
20L of x and 10L of y

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