NaCl Density in lbm/ft3

  1. Calculate the density of NaCl at 20C in lbm/ft3 ?

    since no volume was given i was wondering if this can be done this way
    by using the Specific gravity which around 2.1x the referance density of solids/liquids which is 62 lbm/ft3 SG=p x pref


    or can this be done using the PV=nRT, i assume at 1 mole so V=RT since D=m/v
    D=m/(RT)
    D=58(g/mol)/(8.3x293K)=0.024


    i was also thinking of calculating the density using the FCC cube and go from there, I just think i' am making this problem seem harder than it is

    Any feed back is appreciated

    thx
     
  2. jcsd
  3. Borek

    Staff: Mentor

    PV=NRT is for ideal gases, not for soilds.

    If you are given specific gravity all you have to do is to convert from one units to another.
     
  4. CompuChip

    CompuChip 4,299
    Science Advisor
    Homework Helper

    I just wanted to point out that you are given a volume... it says "in lbm/ft3". So you can assume a volume of 1 ft³.

    Borek is the chemistry expert here though, so follow his approach! :)
     
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