1. Limited time only! Sign up for a free 30min personal 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!

Homework Help: Am I doing these right?

  1. Nov 28, 2007 #1
    Am I doing these right?!?!

    1)How many moles of Li3N will be produced if you begin with 8.5 moles of Li ?

    **Do I just find the moles for 3N and add them to the 8.5 moles of Li?**

    2)Calculate the number of atoms in 20.5 g Carbon

    **I guess I would Multiply Carbon's atoms by 20.5?**

    3)What are the three basic types of compounds that are used as antacids?

    **I have no idea whatsoever! I've looked everywhere for the answer. Please help!**
  2. jcsd
  3. Nov 28, 2007 #2


    User Avatar

    1) write first the equation
    2) 12 gr C contains 6.027*10^23 atoms how mutch is this for 20.5 g?
    3) antacids is this formic acid?
  4. Nov 28, 2007 #3
    Like mit already said first write the equation, balance it, then determine the limiting reactant.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook