Math

posted by .

To conduct a scientific experiment, students need to mix 90 mL of a 3% acid solution. They have a 1% and a 10% soulution available. How many mL of each of the two solution must they combine to pruduce 90mL of the 3% solution?

  • Math -

    Theoretically they need 90ml & 3% = 2.7ml of 100% solution.
    Let x=volume of 10% solution, then
    90-x = volume of 1% solution.
    x*10% + (90-x)*1% = 2.7
    Multiply by 100:
    10x + (90-x) = 270
    Solve for x and check.
    I get 20ml 10% and (90-20)ml 1%.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. BIO 100

    Assignment: The Scientific Method • Review Appendix D. • Open the Scientific Method Web site. • Follow the instructions at the bottom of the Web site to choose a hypothesis and prediction about growing plants. • Click on Do …
  2. Chemistry

    A student did not fully mix the solution of Oxalic Acid in the volumetric flask predict and explain the effect of the range of the students titration volumes when using the NaOH solution to titrate the Oxalic Acid solution
  3. college algebra (maths 112)

    To conduct a new experiment, a scientist needs a 23% salt water solution. How much of a 13% solution must be mixed with 45 quarts of a 32% solution to get the proper solution?
  4. Math

    A chemist needs to mix an 18% acid solution with a 45% acid solution to obtain a 12 liter mixture consisting of 36% acid. How many liters of each acid solutions must be used?
  5. math

    A lab needs a 20 liters of a 15% acid solution. The lab only has a 10% acid solution and a 30% acid solution. How much of the 10% acid solution will they need to mix with the 30% solution to obtain 20 liters of a 15% solution?
  6. algebra

    to conduct a scientific experiment, students need to mix 90 millimeters of a 3% acid solution. They have a 1% solution and a 10% solution available. How many millimeters of a 1% solution and of the 10% solution should be coming to …
  7. HELP MATH PLEASE

    You have two beakers of acid solution. One beaker contains a 17% acid solution, and the other beaker contains a 91% ACID SOLUTION. How many liters of the 17% acid solution must you mix with the 91% acid solution to make 2 liters of …
  8. math

    in chemistry class, todd has 1 liter of a 23% sulfuric acid solution, how much of a 15% sulfuric acid solution must he mix with the 1 liter of 23% solution to make a 18% solution?
  9. Math

    Melanie needs 75% of sugar solution to conduct an experiment.However she only has 40% and90% sugar solution available .how much each solution must she use in order to obtain 60L of the75% of solution?
  10. Math

    One of Anne’s most important duties at the clinic is to prepare solutions with the correct amount of anesthetic for animals undergoing surgery. For today’s surgery, she needs 250 milliliters of a 20% solution, but only has a 10% …

More Similar Questions