College Algebra

posted by .

Please, I need your help!How much water must be evaporated from 16oz of a 2% salt solution to make a 4% salt solution?

  • College Algebra -

    twice the concentration means half the volume, since the same amount of salt remains.

    So, we lost half of 16 oz, or ?

  • College Algebra -

    by intuition, it must be 8 oz

    or

    the amount of salt must stay the same, so
    .02(16) = .04(16-x)
    .32 = .64 - .04x
    .04x = -.32
    x = 8

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Algebra 2

    How much wat must be evaporated from a 65-gallon tank of 40% salt solution in order to obtain an 80% salt solution?
  2. Algebra 2 URGENT

    How much water must be evaporated from a 300 L tank of 2% salt solution to obtain a 5% solution?
  3. algebra

    How many kilograms of water must be evaporated from 10kg of an 8% salt solution to produce a 25% salt solution
  4. algebra

    How many kilograms of water must be evaporated from 10kg of an 8% salt solution to produce a 25% salt solution
  5. chemistry

    a salt solution is evaporated to dryness. If 25.7 g of the solution leaves 1,949 mg of dry salt, what is the percent concentration (w/w) of the salt in the solution
  6. Chemistry

    A salt solution is evaporated to dryness. If 66.5 g of the solution leaves 1,492 mg of dry salt, what is the percent concentration (w/w) of the salt in the solution?
  7. DON VASCO PATNA

    A salt solution of 15 litres contains 20% salt.How much water must you add to salt solution in order to dilute it 15% salt?
  8. Material balance

    A dilute salt solution containing 6% salt is fed to an evaporator at rate of 10000 kg/h for a trail run. crystals formed along with the saturated solution adhering with them are sent to a centrifuge for the recovery of the solution. …
  9. math

    A salt solution of 15 litres contains 20%salt. How much water must you add to salt solution, in order to dilute it 15% salt?
  10. math

    25% of water is evaporated from containing 150 gm of common salt, the % of salt in remaining solution is increased by how much?

More Similar Questions