1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Stearic acid problem

  1. Nov 8, 2006 #1

    I have two questions that I am stuck on involving stearic acid solutions.

    1a) 0.01mL of a solution containing 2 grams per litre of stearic acid in acetone is used. What mass of stearic acid is present in this drop of solution?


    0.01ML solution X (1L/1000mL solution) X 2g stearic acid/1L solution
    = 2 x 10^-5 g

    1b)The density of stearic acid is 0.9408g/mL. What will be the volume of stearic acid left from the drop of solution when all the acetone is evaporated?


    .00002g stearic acid X (1mL/0.9408g stearic acid) X (1L/1000mL)
    = 2 x 10^-8 L

    These are the best solutions I could come up with but I have a feeling both are incorrect. Any help would be appreciated.

    thank you.
  2. jcsd
  3. Nov 8, 2006 #2
    Both look fine.
  4. Nov 10, 2006 #3
    Thank You!
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?