1. Limited time only! Sign up for a free 30min personal 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!

Balloon volume

  1. Mar 16, 2012 #1
    The total mass of helium in a balloon is 199 kg. What is the volume of the balloon? Enter only the numeric portion of the answer, not the units.

    That is the problem. Im having trouble locating a simple forumla for this. All I can seem to find involve having the radius of the balloon which I do not have. In the book it says each cubic foot of helium can lift .069 lb, so this may play a factor but im unsure of how exactly. I have thought about converting 199KG to lbs and dividing by .069. Is this thinking correct?
  2. jcsd
  3. Mar 16, 2012 #2
    Helium = 0.179 so maybe I can take 199kg times .179 and that 35.621 kg is this correct?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook