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Homework Help: HELP! 1 Density-volume question?

  1. Sep 15, 2010 #1
    HELP! 1 Density-volume question!??URGENT!!

    1. The problem statement, all variables and given/known data
    1.An unknown liquid has a mass of 26.366g and volume of 25.24 x10^-3 liters at 25'C.
    Identify the likely substance from the following information.

    Substance tricholorobenzene (density:1.454g/mL)
    acetone (density: 1.049g/mL)
    chloride( denisty: .8862g/mL)

    2. If the substance had been water with a density of .9982g/mL at 25'C, what would be its new volume?

    2. Relevant equations

    g/mL

    3. The attempt at a solution
    1.26.366g/(25.24ml) => acetone
    2. i have no idea...g/mL density .9982g/mL

    Please HELP!!
     
  2. jcsd
  3. Sep 15, 2010 #2

    Borek

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    Staff: Mentor

    Re: HELP! 1 Density-volume question!??URGENT!!

    What is density definition?
     
  4. Sep 15, 2010 #3
    Re: HELP! 1 Density-volume question!??URGENT!!

    g/mL =density =mass/volume??? intensive physical property!!
    please help!
     
  5. Sep 15, 2010 #4

    Borek

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    Staff: Mentor

    Re: HELP! 1 Density-volume question!??URGENT!!

    Right.

    [tex]d = \frac m V[/tex]

    You are given mass, you are given density - solve for V.
     
    Last edited by a moderator: Aug 13, 2013
  6. Sep 15, 2010 #5
    Re: HELP! 1 Density-volume question!??URGENT!!

    is the answer for 1 acetone???
    is the answer for 2 25.19ml???

    I know the formula already;;;;g/ML
     
  7. Sep 15, 2010 #6

    Borek

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    Staff: Mentor

    Re: HELP! 1 Density-volume question!??URGENT!!

    1 - yes, 2 - no.

    That's not the formula. That's - at best - density unit.

    Slow down. Solve for V. Write it using symbols that I have used earlier.
     
    Last edited by a moderator: Aug 13, 2013
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