April 28, 2024, 05:23:34 AM
Forum Rules: Read This Before Posting


Topic: Question  (Read 3909 times)

0 Members and 1 Guest are viewing this topic.

Offline akahloon

  • New Member
  • **
  • Posts: 3
  • Mole Snacks: +0/-0
Question
« on: June 14, 2007, 12:17:40 AM »
I have this question here and i wanted to know if i could find out the solution in one easy step or would i have to do multiple steps, also does anyone have AIM who is willing to answer some questions i may have. here is the question

the temperature of 300ml of a gas is changed from 27 degrees celsius to 7 degrees celsius at constant pressure. what is the new volume in meters.

How would i solve this question? would i do this in  multiple parts? or is there one formula?

Could i just use the formula pV=nRT? or is there another formula i would have to use?

Offline ifuller

  • Full Member
  • ****
  • Posts: 104
  • Mole Snacks: +1/-1
Re: Question
« Reply #1 on: June 14, 2007, 12:35:16 AM »
Do not quote me on this but I believe the equation you would use is:

Pinitial * V initial * T final = Pfinal * V final * T initial
 
Seeing that P is constant you can just take those out.
Hope that helps

Offline akahloon

  • New Member
  • **
  • Posts: 3
  • Mole Snacks: +0/-0
Re: Question
« Reply #2 on: June 14, 2007, 12:45:26 AM »
after doing that, my answer came out to 2100=8100.

the answer is supposed to be 280.

How is that the answer?

Offline akahloon

  • New Member
  • **
  • Posts: 3
  • Mole Snacks: +0/-0
Re: Question
« Reply #3 on: June 14, 2007, 01:01:56 AM »
i found out what it is

its nR T1/v1= nR T2/V2



Offline Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 27665
  • Mole Snacks: +1801/-410
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: Question
« Reply #4 on: June 14, 2007, 02:37:45 AM »
after doing that, my answer came out to 2100=8100.

Huh? It should be 300/(273+27) = Vn/(273+7) - just solve for Vn.

Equation you have listed:

Quote
nR T1/v1= nR T2/V2

is somehow half a way through. nR is constant, so you can cancel it out as well.
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info

Sponsored Links