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Homework Help: Density of mixture problem

  1. Dec 29, 2008 #1
    1. The problem statement, all variables and given/known data
    In a mixture of 100 gm , 2 liquids are mixed in ratio 1:3 of their masses . If densities of liquids are 1.25gm/cc and 0.6gm/cc , find the density of mixture.


    2. Relevant equations
    D = mass/Volume


    3. The attempt at a solution
    mass = 100g
    let m1 = x , m2 = 3x
    d1 = 1.25 gm/cc , d2 = 0.6gm/cc
    mass = m1+m2
    100= 4x
    100/4 = x
    m1 = 25, m2 = 75
    V1= 25/125*100 = 20cm3
    V2 = 75/6*10 = 125cm3
    d = mass/volume
    = 100/145 = 20/29 = 0.6gm/cc

    is that ^^ correct?
     
  2. jcsd
  3. Dec 29, 2008 #2

    rl.bhat

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    Homework Helper

    d = mass/volume
    = 100/145 = 20/29 = 0.6gm/cc


    Correct. But wright as 0.69 gm/cc
     
  4. Dec 30, 2008 #3
    ok , thank you :)
     
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