March 19, 2024, 04:02:25 AM
Forum Rules: Read This Before Posting


Topic: calculating density of ideal NaCl crystal. My conv factor must be off  (Read 3492 times)

0 Members and 1 Guest are viewing this topic.

Offline Zym

  • New Member
  • **
  • Posts: 6
  • Mole Snacks: +0/-0
  • Gender: Male
OK, I'm trying to calculate the density of an ideal NaCl crystal for a lab report. I know I messed up some where. Can anyone point me in the right direction?

Heres what I have:

4NaCl   M  = 233.768 amu.  V= (283 pm x 2)^3 = 80089 pm3
     
      233.768amu / 80089 pm  X  1E10 pm/ 1 cm X 1g/6.022 E23 amu = 3.19066 E -14 g/cm^3

now I'm not a rocket scientist (physics isn't until next year  ;D ) but I know a cm^3 of salt weighs a LOT more than that.

Thanks in advance for any help you may be able to offer. I did a search on the boards here and couldn't seem to turn up anything.
« Last Edit: March 01, 2007, 10:44:50 AM by Zym »

Online Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 27624
  • Mole Snacks: +1799/-410
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: calculating density of ideal NaCl crystal. My conv factor must be off
« Reply #1 on: March 01, 2007, 10:57:09 AM »
Hint: units don't cancel.
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info

Sponsored Links