ITEMS NEED * an amount of dry ice the size of your fist * 99% rubbing alchohol * scissors * big plastic coke bottle & little plastic coke bottle # use the scissors to poke holes on the bottom sides of the SMALL coke bottle (not the bottom, the bottom's sides) # cut the top part (just above where the brand label is) off both of the coke bottles # put the small bottle inside the big one, and place chunks of dry ice inside (chunks the size of ice cubes) # SLOWWWWLY pour in the the rubbing alchohol in until the large bottle is about half way full. PLEASE DO NOT BREATH THE VAPORS # when it stops boiling and goes more to a tiiiny bubbling, have fun with it. but be careful, stick your hand in it and it will freeze like an ice cube. do not let any of this to touch you. IT STICKS LIKE GLUE!! ----
They are sometimes available locally in a coolant store. But in larger qualities, it can be ordered specially. You would need to get a private telephone quote from a liquid-gas selling site that has a store near your location.
To collect liquid nitrogen by slowly cooling air under pressure, you would need to contain it (in a tank for example) and then slowly lower the temperature whilst collecting any other gases that freeze or turn into a liquid. When the temperature gets to -196°C the nitrogen should turn into a liquid, so you could then collect it.
Nitrogen gas exists in the air we breathe. In order to turn it into liquid, the nitrogen must be cooled to -320 degrees Fahrenheit in order to turn into liquid. Compressor machines are required to compress the air, cool it down, let the cooled gas expand again, and then cool it back down to -320. This produces a liquid of oxygen and nitrogen. In order to separate the nitrogen, the liquid is heated up to the boiling point of liquid nitrogen, and the vapour collected is pure liquid nitrogen.
The short awnser is by cooling it. The long awnser involves the process by which nitrogen is cooled. Look up the JT effect.
use of liquid nitrogen in refrigerator
Both Nitrogen and Oxygen may be liquefied at normal atmospheric pressure simply by cooling them enough. Carbon dioxide has to be pressurize as well as chilled to turn it into a liquid. In this form, it is commonly used as an industrial solvent. For example to produce decaffeinated coffee.
At normal atmospheric pressure, nitrogen is gaseous over the entire liquid range of water (and considerably below as well; the boiling point of nitrogen is about 77 K).
In the atmosphere it is a gas, in the soil it its a solid, nitrogen gas can be converted to liquid in air separation plants. Also, as a liquid Nitrogen is very cold -- cryogenic temperatures. Nitrogen is stored as liquid commonly for convenience, even when gas is required, because liquid is more dense than gas and more nitrogen could be stored in the same volume. Simply, the answer to your question is nitrogen is a solid, liquid and gas depending on where you find it or how you've modified it.
The cost of liquid nitrozen is 400
By extreme cooling and compression
At the same pressure yes, liquid nitrogen is colder than gaseous nitrogen.
use of liquid nitrogen in refrigerator
At the atmospheric pressure, liquid nitrogen only exists in temperatures below 177 K.
Liquid nitrogen is made by taking in air from the atmosphere and compressing and cooling it. Once it is cool enough, it forms a liquid. This liquid contains argon, oxygen and nitrogen. These elements are then separated and sold as a commodity. The temperature is the only difference.
While liquid nitrogen theoretically could be used as a wart remover, this is not done in practice due to the difficulty of maintaining nitrogen in the liquid state. Commercial wart remover products contain dimethyl ether and propane. These liquified compounds (which are gaseous at room temperature and pressure) boil upon releasing the pressure in the container, thereby causing a dramatic cooling effect. Because liquid nitrogen is so cold and can cause severe frost bite, it is used only by physicians to kill warts.
Nitrogen ice is solid. Liquid nitrogen is liquid. At standard temperature and pressure, nitrogen is gaseous.
liquid nitrogen boils at −196 °C (77 K; −321 °F)
Pressure on a cooling system raises the boiling point of the liquid and aids in the efficiency of the system.
Both Nitrogen and Oxygen may be liquefied at normal atmospheric pressure simply by cooling them enough. Carbon dioxide has to be pressurize as well as chilled to turn it into a liquid. In this form, it is commonly used as an industrial solvent. For example to produce decaffeinated coffee.
no. Compressed nitrogen need not be insulated. Liquid nitrogen is always insulated. Typically compressed nitrogen is stored at high pressure(over 1000 psi) and liquid nitrogen is kept at less than 100 psi.
Liquid nitrogen can be kept at room temperature at sufficient pressure. Otherwise, it is a gas.