November 28, 2024, 08:56:30 AM
Forum Rules: Read This Before Posting


« previous next »
Pages: [1]   Go Down

Topic: Concentration  (Read 3214 times)

0 Members and 1 Guest are viewing this topic.

Offline soupastupid

  • Regular Member
  • ***
  • Posts: 53
  • Mole Snacks: +0/-8
Concentration
« on: May 16, 2010, 03:02:20 PM »
A liter of CuCl2-water solution which contains 1.0 mg of CuCl2 has a concentation of CuCl2:

a. 1 ppb
b 1 ppm
c 1 ppt
d 1%
e 10%
how do i do this problem?

1mg/1L ??
Logged

Offline Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 27863
  • Mole Snacks: +1813/-412
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: Concentration
« Reply #1 on: May 16, 2010, 03:41:48 PM »
What does it mean "1 ppm"?
Logged
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info

Offline soupastupid

  • Regular Member
  • ***
  • Posts: 53
  • Mole Snacks: +0/-8
Re: Concentration
« Reply #2 on: May 16, 2010, 03:45:23 PM »
part per million
part per thousand
part per billion

wtf right?
Logged

Offline Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 27863
  • Mole Snacks: +1813/-412
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: Concentration
« Reply #3 on: May 16, 2010, 05:52:07 PM »
What is mass of 1L of water?
Logged
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info

Offline soupastupid

  • Regular Member
  • ***
  • Posts: 53
  • Mole Snacks: +0/-8
Re: Concentration
« Reply #4 on: May 16, 2010, 07:23:02 PM »
????

1 L of water??

i need to have temperature if i wanted to figure out how much it weighs right?
Logged

Offline Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 27863
  • Mole Snacks: +1813/-412
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: Concentration
« Reply #5 on: May 17, 2010, 03:02:09 AM »
Depends on how precise you want to be. As a first approximation 1L of water always (almost by definition) weights the same.

You were very close to the answer in your first post.
Logged
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info
Pages: [1]   Go Up
« previous next »
Sponsored Links