Turn on thread page Beta
    • Thread Starter
    Offline

    2
    ReputationRep:
    I really can’t do these questions if anyone can help with even just one please do xox

    1) what volume of carbon dioxide gas, measured at 527’C and 100000Pa is formed when 1000g of propane is burned in a good supply of oxygen?
    C3H8 + 5O2 -> 3CO2 + 4H2O

    2) Calculate the relative molecular mass of a gas which has a density of 2.615gdm^-3 at 25’C and 101000Pa

    3) a certain mass of an ideal gas is in a sealed vessel of volume 3.25dm^3. At 25’C it exerts a pressure of 101000Pa. What pressure will it exert at 100’C?

    4) An ideal gas occupies a volume of 2.75dm^3 at 17’C and 8.7 x 10^4Pa. At what temperature will it occupy 3.95dm^3 at 1.01 x 10^5Pa?

    Thank you to anyone who can help
    Offline

    12
    ReputationRep:
    (Original post by Gmartina)
    I really can’t do these questions if anyone can help with even just one please do xox

    1) what volume of carbon dioxide gas, measured at 527’C and 100000Pa is formed when 1000g of propane is burned in a good supply of oxygen?
    C3H8 + 5O2 -> 3CO2 + 4H2O

    2) Calculate the relative molecular mass of a gas which has a density of 2.615gdm^-3 at 25’C and 101000Pa

    3) a certain mass of an ideal gas is in a sealed vessel of volume 3.25dm^3. At 25’C it exerts a pressure of 101000Pa. What pressure will it exert at 100’C?

    4) An ideal gas occupies a volume of 2.75dm^3 at 17’C and 8.7 x 10^4Pa. At what temperature will it occupy 3.95dm^3 at 1.01 x 10^5Pa?

    Thank you to anyone who can help

    For the first one, calculate the number of moles of Propane by dividing the weight (1000g) by the molecular mass,
    You know that propane to CO2 is in a 1:3 ratio so number of miles of CO2 is 3 times the number for propane.
    Then use PV=nRT and rearrange to find V (nRT/P)

    For 4 find the number of moles (PV/rT=n) then use n in a second equation to find T(PV/nR)
    Posted on the TSR App. Download from Apple or Google Play
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: October 18, 2017
The home of Results and Clearing

1,041

people online now

1,567,000

students helped last year

University open days

  1. SAE Institute
    Animation, Audio, Film, Games, Music, Business, Web Further education
    Thu, 16 Aug '18
  2. Bournemouth University
    Clearing Open Day Undergraduate
    Fri, 17 Aug '18
  3. University of Bolton
    Undergraduate Open Day Undergraduate
    Fri, 17 Aug '18
Poll
Do you want your parents to be with you when you collect your A-level results?

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.