1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Ideal Gas Question

  1. Aug 1, 2009 #1
    1. The problem statement, all variables and given/known data
    A house has a volume of 770 m^3. (a) what is the total mas of air inside the house at 20 Celsius? (b) If the temperature drops to -10 Celsius, what mass of air enters or leaves te house?


    2. Relevant equations

    PV = nRT

    3. The attempt at a solution
    I found the solution for part a which I think 924 kg. I found this answer by multiplying 770 m^3 by 1.2 kg (density of air at 20 Celsius: 1.2kg/m^3).
    But I do not know how to find the answer to part b. I read the whole chapter but still did not know how. Please help me.
     
  2. jcsd
  3. Aug 1, 2009 #2

    rl.bhat

    User Avatar
    Homework Helper

    Using the formula
    V1T1 = V2/T2
    find V2.
    Then find the change in volume. Multiply it with density to get the mass air entering the room.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Ideal Gas Question
  1. Ideal Gas question (Replies: 1)

  2. Ideal Gas question (Replies: 8)

Loading...