Forums
New posts
Search forums
What's new
New posts
New media
New media comments
Latest activity
Classifieds
Media
New media
New comments
Search media
Log in
Register
What's New?
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Navigation
Install the app
Install
More Options
Advertise with us
Contact Us
Close Menu
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Forums
The Water Cooler
General Discussion
Safety in garage floor / in ground vs above ground tornado shelters ?
Search titles only
By:
Reply to Thread
This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Message
<blockquote data-quote="Lenonthelake" data-source="post: 2204168" data-attributes="member: 28842"><p>Natural gas is lighter than air. It does not flow down hill. If you don't believe me, use a natural gas hose to blow natural gas bubbles. Put the hose in a soap solution or bubble solution. They will float to the ceiling. My class loves this demonstration, trying to catch the bubble with a lighter is enlightening. Nice fire balls.</p><p>Gasoline, propane, will fill the holes. It is heavier than air. If you want to do the math. </p><p></p><p>Natural gas is CH4= 16 g / mole</p><p>Propane is C3H8 = 44 g /mole</p><p>Gasoline is basically C8H18. 114 / mole. Gasoline is a mixture of several different fractions I just used the octane one for the example. If you have ever used gasoline to light fires you know it sinks along the ground. </p><p></p><p>Air is 78 % Nitrogen and 21% Oxygen. Air is about 28.88 g / mole. </p><p></p><p>If the mass is less than the mass of air it floats, if it is more it sinks. Regular balloons filled with natural gas will sink because of the weight of the balloon. I think a thin trash-bag will float if it is of the large kind. I have heard stories of people doing that with a candle attached to light the gas at altitude. I have not actually tried it.</p></blockquote><p></p>
[QUOTE="Lenonthelake, post: 2204168, member: 28842"] Natural gas is lighter than air. It does not flow down hill. If you don't believe me, use a natural gas hose to blow natural gas bubbles. Put the hose in a soap solution or bubble solution. They will float to the ceiling. My class loves this demonstration, trying to catch the bubble with a lighter is enlightening. Nice fire balls. Gasoline, propane, will fill the holes. It is heavier than air. If you want to do the math. Natural gas is CH4= 16 g / mole Propane is C3H8 = 44 g /mole Gasoline is basically C8H18. 114 / mole. Gasoline is a mixture of several different fractions I just used the octane one for the example. If you have ever used gasoline to light fires you know it sinks along the ground. Air is 78 % Nitrogen and 21% Oxygen. Air is about 28.88 g / mole. If the mass is less than the mass of air it floats, if it is more it sinks. Regular balloons filled with natural gas will sink because of the weight of the balloon. I think a thin trash-bag will float if it is of the large kind. I have heard stories of people doing that with a candle attached to light the gas at altitude. I have not actually tried it. [/QUOTE]
Insert Quotes…
Verification
Post Reply
Forums
The Water Cooler
General Discussion
Safety in garage floor / in ground vs above ground tornado shelters ?
Search titles only
By:
Top
Bottom