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Does a empty oxygen cylinder weigh the same full?
    #6481462 -

I was told that a empty oxygen cylinder weighs the same full. I swear i can tell a difference when i drop off my tanks, and i think the empties weigh less.

However the owner of Apex (my oxygen supplier) in Santa Cruz claims that there is no difference in the weight. I figure he should be credible if he owns the damn place, or runs it whatever.

I still find this hard to believe.


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"With an abundance of Cyanescens... i would never touch another Cubensis again."

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Re: Does a empty oxygen cylinder weigh the same full? [Re: pscyanescens]
    #6481486 -

Considering oxygen is indeed matter... and all matter has mass... it has to weigh more.

Elementary my boy!


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I promise to live, love, exist, and be, and hope that all life will love to be in existence with me. Also, fuck you.

-j

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Re: Does a empty oxygen cylinder weigh the same full? [Re: pscyanescens]
    #6481491 -

pscyanescens said:
However the owner of Apex (my oxygen supplier) in Santa Cruz claims that there is no difference in the weight.


Whaaa? He should know better.

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Re: Does a empty oxygen cylinder weigh the same full? [Re: pscyanescens]
    #6481494 -

full cylinders of gas weigh a hell of a lot more than empty ones. Air is heavier than people think.

If you put a cylinder around the eiffel tower, the air inside would weigh more than the tower does.


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I find your lack of faith disturbing

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Re: Does a empty oxygen cylinder weigh the same full? [Re: pscyanescens]
    #6481497 -

No. While gases have relatively small densities, there is no way a gas compressed in a tank wouldn't add a qualitative amount of weight.


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The story goes, or the way that I was told
There was a king that always felt too high and then he fell too low
And so he called all the wise men to the hall
And begged them for a gift to end the rises and the falls
But here’s the thing, they came back with a ring
It was simple and was plainly unbefitting of a king
Engraved in black, it had no front or back
But there were words around the band that said
Just know: This Too Shall Pass


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Re: Does a empty oxygen cylinder weigh the same full? [Re: NobodyCares]
    #6481527 -

He explains it by saying that determining the atomic weight of oxygen is almost immeasurable. He goes further by saying that if oxygen weighed any considerable amount, then the oxygen above us would be crushing us and making us "feel really heavy" i believe he put it.

My other friend goes to ask if the gas was compressed or liquefied. I don't think it is liquid. Do any welders or fellow glass blowers no if the small industrial tanks are liquid?

I am pretty sure the liquid oxygen tanks are the huge ones that leak a certain percentage everyday, due to the pressure it is under.


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----------------
"With an abundance of Cyanescens... i would never touch another Cubensis again."

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Re: Does a empty oxygen cylinder weigh the same full? [Re: pscyanescens]
    #6481536 -

OK my tank is a 249 psi size.

Due to the fact that it is PSI i don't think it is liquid. With liquid i doubt they measure the tanks using preasure. I could be wrong.


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----------------
"With an abundance of Cyanescens... i would never touch another Cubensis again."

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Re: Does a empty oxygen cylinder weigh the same full? [Re: pscyanescens]
    #6481541 -

:bitchsmack:

Does a shot glass of liquor weigh more when it's empty or full?


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Jerry Garcia. JERRY GARCIA! JERRY GARCIA!!!!

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Re: Does a empty oxygen cylinder weigh the same full? [Re: pscyanescens]
    #6481561 -

The oxygen and nitrogen above us does "feel really heavy" it's called atmospheric pressure, and it's why our blood would boil in a vacuum. For a tank around 250 PSI, I would guess that it's just pressurized, but not enough to be liquid. Do the tanks feel cold to the touch?


--------------------
The story goes, or the way that I was told
There was a king that always felt too high and then he fell too low
And so he called all the wise men to the hall
And begged them for a gift to end the rises and the falls
But here’s the thing, they came back with a ring
It was simple and was plainly unbefitting of a king
Engraved in black, it had no front or back
But there were words around the band that said
Just know: This Too Shall Pass


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Re: Does a empty oxygen cylinder weigh the same full? [Re: GnuBobo]
    #6481574 -

GnuBobo said:
:bitchsmack:

Does a shot glass of liquor weigh more when it's empty or full?


Who said we were even talking about liquids here?

Not to mention i am really talking about a noticable difference in weight.  And i doubt if i could tell blind folded the difference in weight between a full and empty shot glass.


--------------------
----------------
"With an abundance of Cyanescens... i would never touch another Cubensis again."

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Re: Does a empty oxygen cylinder weigh the same full? [Re: pscyanescens]
    #6481584 -

Nope the tanks don't feel cold. Not durring or after using them.

When liquids that boil at low temps turn are converted into gas by boiling, it causes a reduction in temperature. This is similar to how household air conditioning works. For this reason i don't believe my tanks are liquid.

SO........ does your air compressor weigh more full or empty?

Is this the same question?


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----------------
"With an abundance of Cyanescens... i would never touch another Cubensis again."

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Re: Does a empty oxygen cylinder weigh the same full? [Re: pscyanescens]
    #6481675 -

Dude--the reason a tank is weighted at a given number is because it contains that weight of pressurized gas.


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Jerry Garcia. JERRY GARCIA! JERRY GARCIA!!!!

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Re: Does a empty oxygen cylinder weigh the same full? [Re: GnuBobo]
    #6481802 -

Quote:
Dude--the reason a tank is weighted at a given number is because it contains that weight of pressurized gas.


True!

Quote:
He explains it by saying that determining the atomic weight of oxygen is almost immeasurable. He goes further by saying that if oxygen weighed any considerable amount, then the oxygen above us would be crushing us and making us "feel really heavy" i believe he put it.


Compressed O2 has a molar mass of 32g/mol
At 17atm(249psi) there is 0,695moles of O2/litre
if your tube is 5l then the compressed air weighs 111g


--------------------

Rodney Brooks on Robots
Nalim said: "Quoting yourself is retarded."

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Re: Does a empty oxygen cylinder weigh the same full? [Re: pscyanescens]
    #6481902 -

Ive just weighed two identical O2 cylinders (one empty one full),, i only have electronic bathroom scales but one weighed in at 0.05 and the other 0.06...

You can feel a difference when you pick them up anyway,,, kinda obvious.

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Re: Does a empty oxygen cylinder weigh the same full? [Re: Mike_yy]
    #6481933 -

What about a tank of helium?

Does that weigh more or less when full..... ponder ponder.


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...the whole experience is (and is as) a profound piece of knowledge.  It is an indellible experience; it is forever known.  I have known myself in a way I doubt I would have ever occurred except as it did.

Smith, P.  Bull. Menninger Clinic (1959) 23:20-27; p. 27.

...most subjects find the experience valuable, some find it frightening, and many say that is it uniquely lovely.

Osmond, H.  Annals, NY Acad Science (1957) 66:418-434; p.436

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Re: Does a empty oxygen cylinder weigh the same full? [Re: pscyanescens]
    #6482016 -

My Ktanks break my back! More so when they are full. They feel like they gain almost double. What i really want to get is a Dewar tank. But that ways 800 some odd pounds.

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Re: Does a empty oxygen cylinder weigh the same full? [Re: pscyanescens]
    #6482024 -

Small tanks are not liquid. Liquid oxygen has to be at something like -118 Celsius. Anything warmer and it boils and becomes gas. Liquid ox LOX is often held in a Dewar tank.

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Re: Does a empty oxygen cylinder weigh the same full? [Re: pscyanescens]
    #6482041 -

yea, those tanks are heavier when they are full... i used to be into glass blowing. I think the large one's even say the weight on them "full=xx Lb, Empty=xx Lb" but i could be wrong on that. I think i remember there bieng about a 40lb difference, 120-80 full/empty, but again, i could be wrong, it's been awhile.


--------------------
On a mission to prove that the truth gets you no where.
They tried the truth, It didn't work. Then they wrote the bible. 

Only the foolish fear the inevitable.

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Re: Does a empty oxygen cylinder weigh the same full? [Re: Corporal Kielbasa]
    #6482130 -

Corporal Kielbasa said:
Small tanks are not liquid. Liquid oxygen has to be at something like -118 Celsius. Anything warmer and it boils and becomes gas. Liquid ox LOX is often held in a Dewar tank.


I was just going to say this.

Liquid oxygen is rocket fuel!


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After one comes, through contact with it's administrators, no longer to cherish greatly the law as a remedy in abuses, then the bottle becomes a sovereign means of direct action.  If you cannot throw it at least you can always drink out of it.  - Ernest Hemingway

If it is life that you feel you are missing I can tell you where to find it.  In the law courts, in business, in government.  There is nothing occurring in the streets. Nothing but a dumbshow composed of the helpless and the impotent.    -Cormac MacCarthy

He who learns must suffer. And even in our sleep pain that cannot forget falls drop by drop upon the heart, and in our own despair, against our will, comes wisdom to us by the awful grace of God.  - Aeschylus

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Re: Does a empty oxygen cylinder weigh the same full? [Re: Madtowntripper]
    #6482133 -

To a lesser degree yes it is. Hydrogen is where it's at though, or as W_S would say helium3 is where it's at.

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