Math

posted by .

How many milliliters of pure acid must be added to 150 milliliters of a 70% solution of acid to obtain a 80% solution?

  • Math -

    let the amount to be added be x ml

    .7(150) + x = .8(150+x)
    times 10
    7(150) + 10x = 8(150+x)
    solve for x

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Algebra 2

    How much pure acid must be added to 6 milliliters of a 5% acid solution to produce a 40% acid solution?
  2. math

    How many milliliters of a 75% acid solution must be added to 90 ml of a 10% acid solution to make a 25% acid solution?
  3. Math

    How many milliliters of a 75% acid solution must be added to 90 ml of a 10% acid solution to make a 25% acid solution?
  4. algebra

    A chemist mixes some 20% acid solution with pure 100% acid to increase the concentration. How much pure acid and acid solution should be mixed to form 100 milliliters of 40% acid solution?
  5. algebra 2

    A chemist mixes some 20% acid solution with pure 100% acid to increase the concentration. How much pure acid and acid solution should be mixed to form 100 milliliters of 40% acid solution?
  6. Algebra

    How many milimiters of pure acid must be added to 150 milimiters of a 30% solution of acid to obtain a 40% solution?
  7. Solving Rational Equations

    100mL of a solution contains 30 mL of acid; this is called a 30% acid solution because part 30 ---- = ---- = 0.30. whole 100 How many milliliters of acid x would need to be added to the solution to turn it into a 50% solution ?
  8. Algebra

    100mL of a solution contains 30 mL of acid; this is called a 30% acid solution because part 30 ---- = ---- = 0.30. whole 100 How many milliliters of acid x would need to be added to the solution to turn it into a 50% solution ?
  9. math

    How much pure acid must be added to 2 liters of a 10% solution of acid to obtain a mixture that is 20% acid?
  10. Math

    an 8% solution, a 10% solution, and a 20% solution of sulfuric acid are to be mixed to get 100 milliliters of a 12% solution. How many milliliters of each must be mixed if the volume of the 20% solution must be 25 milliliters less …

More Similar Questions