How do you extract (Take Out) oxygen from a jar so that when it has a lid on it there is just about no oxygen?

Question

How do you extract (Take Out) oxygen from a jar so that when it has a lid on it there is just about no oxygen?

Answer 1

put  a lightd  candle  in  the  jar  and  then  close  it  wth  a lid.  

the candle  will  utilise  the  available 02.and  wen   there  is  no  more  02  left , the flame  dies  out. voila  u  have  a jar  wth  no  02  in  it

Answer 2

If you don't want to create a vacuum and you don't want to use a candle, put a small dish of iron filings in there, add water and seal the lid. After a few days the iron will react with the oxygen in the air to create iron oxide or rust.

Answer 3

try a vacuum pump and then figure out a way to seal the jar

Answer 4

The easiest way would be to flush the jar with some other gas like nitrogen or co2. If you don't have access to these gases the next best method would be to add some moist iron fillings to the bottom of the jar. As the iron fillings rust they will absorb the oxygen and form iron oxide. This will probably take a few days.

Burning a candle as another correspondent answered will only reduce the oxygen down to a certain level, it will contain a significant amount of oxygen.

Answer 5

Work in a vacuum chamber.  Vacuum the chamber and then put the lid on the bottle.  When the bottle is removed from the chamber, it wont contain oxygen.

Answer 6

You could use the same technique that is used for canning your own goods.  Place a mason jar, with a lid in a pot of water, bring that water to a boil.

As the water boils, the air inside heats and expands.  As it expands, the air escapes from the jar.  Remove the jar from the water and let it cool.  As the temperatre cools, the air will again contract, forming a vacuum seal.

This will NOT get all of the air out of the jar, but will reduce the amount by enough to create a firm vacuum seal on the jar.

Answer 7

put a lit candle in it. when the fire's gone then there's no more oxygen in the jar.