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!

Mole problems

  1. Nov 28, 2007 #1
    1. The problem statement, all variables and given/known data



    *How many moles of LiH are required to make 1 mole of LiAlH4?


    * 6 moles of LiH will produce how many moles of LiAlH4?


    Can someone help me get started on these?
     
  2. jcsd
  3. Dec 2, 2007 #2

    Gokul43201

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    You start by writing the balancing the relevant equation. Can you do that for the above reaction?
     
  4. Dec 5, 2007 #3
    I am learning the same stuff in class, I can clearly see from what is written that there is a 4 to 1 ratio, so I think we get 1.5 moles. What I don't see is how the equation works. I wrote it out and somethings seems missing.
    LiH + Alxx ----> LiAlH4 + xx
    I got myself a bit confused, should there be something for xx or is it just Al?

    P.S. I would not normally encroach on someone elses question, but since two weeks have passed, I figured it would be ok.
     
    Last edited: Dec 5, 2007
  5. Dec 6, 2007 #4

    Gokul43201

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    Good thinking. Alxx is actually [itex]AlCl_3[/itex].
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Mole problems
  1. Mole Fraction problem (Replies: 3)

  2. Quick moles problem (Replies: 7)

Loading...