November 24, 2024, 10:35:27 AM
Forum Rules: Read This Before Posting


« previous next »
Pages: [1]   Go Down

Topic: What is the concentration of 2% starch?  (Read 2333 times)

0 Members and 1 Guest are viewing this topic.

Offline Waffles7

  • New Member
  • **
  • Posts: 6
  • Mole Snacks: +0/-0
What is the concentration of 2% starch?
« on: February 10, 2017, 08:35:07 PM »
I am doing a lab report that asks what the concentration of 2% starch is and I do not know how to answer. please help. I think it was a 5ml solution if that helps. I do not know how to solve so I cannot provide any work. I measured the weight of one drop of starch (0.038g)
« Last Edit: February 10, 2017, 09:48:36 PM by Beejsterb »
Logged

Offline Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 27861
  • Mole Snacks: +1813/-412
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: What is the concentration of 2% starch?
« Reply #1 on: February 11, 2017, 03:32:28 AM »
Quote from: Beejsterb on February 10, 2017, 08:35:07 PM
what the concentration of 2% starch is

Please elaborate, as this question - as asked - doesn't make sense.

What is the length of a 1 meter rod?

How much does a 1 kg bag of sugar weigh?

What is the concentration of a 2% solution?
« Last Edit: February 11, 2017, 07:34:15 AM by Borek »
Logged
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info

Offline Babcock_Hall

  • Chemist
  • Sr. Member
  • *
  • Posts: 5705
  • Mole Snacks: +330/-24
Re: What is the concentration of 2% starch?
« Reply #2 on: February 11, 2017, 09:36:59 AM »
I could be wrong about this, but I was under the impression that starch is a polymer of variable length (therefore, variable mass).  If that is true, I don't see how one could easily express its concentration in terms of molarity or molality.
Logged

Offline AWK

  • Retired Staff
  • Sr. Member
  • *
  • Posts: 7976
  • Mole Snacks: +555/-93
  • Gender: Male
Re: What is the concentration of 2% starch?
« Reply #3 on: February 11, 2017, 09:58:39 AM »
Average molecular weight is used.
Logged
AWK
Pages: [1]   Go Up
« previous next »
Sponsored Links