cryogen
The atmosphere of our planet is composed mostly of nitrogen, therefore nitrogen is readily available and doesn't have to be made. This is a bit like asking "how do you make water?" It's possible to make water - most forms of combustion produce at least some water vapor as a by-produc t - but it is never necessary to do so. It's much easier to use the water that we already have. But then, suppose you need pure nitrogen, 100% nitrogen, not air. Nitrogen can be separated out from air by a process of fractional distillation. Liquify the air (at very low temperatures) and the various components can be boiled off at different temperatures.
Nitrogen
Yes, you can do relatively easily by liquefying the gas at very low temperatures and high pressure, and then raising the temperature gradually. This is because different gases have different boiling temperatures, so that by carefully controlling the temperature, you can obtain a pure gas, while the rest remains liquid. This is how you get pure Oxygen, Nitrogen, and others gases in the atmosphere.
Animals obtain nitrogen primarily through their diet by consuming plants and other animals that contain nitrogen-based compounds. Plants absorb nitrogen from the soil in the form of nitrates and ammonium, which they incorporate into proteins and nucleic acids. When animals eat these plants or other animals, they break down the proteins and nucleic acids to access the nitrogen, which is then used to synthesize their own molecules. Additionally, some animals can also obtain nitrogen from symbiotic relationships with certain bacteria that fix atmospheric nitrogen.
Cyanobacteria can affix atmospheric nitrogen (N2).
Animals obtain nitrogen by eating plants which have absorbed nitrogen from the soil.
Either ammonium nitrite or ammonium dichromate can he heated to obtain nitrogen gas.
One can obtain nitrogen gas at home by purchasing a nitrogen gas cylinder from a supplier or using a nitrogen gas generator to produce nitrogen gas from the air.
Consumers obtain nitrogen through the food they eat, as nitrogen is an essential component of proteins. Inorganic nitrogen can also be found in the air we breathe, but our bodies cannot use this form directly.
Bacteria in soil obtain their nitrogen primarily from organic matter, such as dead plants and animals. They can also obtain nitrogen through nitrogen fixation, a process where certain bacteria convert atmospheric nitrogen into a form that plants can use.
Most organisms obtain nitrogen in the form of nitrate (NO3-) or ammonium (NH4+). These forms of nitrogen are usually present in the soil and can be taken up by plants. Animals then obtain nitrogen by consuming plants or other animals.
The atmosphere of our planet is composed mostly of nitrogen, therefore nitrogen is readily available and doesn't have to be made. This is a bit like asking "how do you make water?" It's possible to make water - most forms of combustion produce at least some water vapor as a by-produc t - but it is never necessary to do so. It's much easier to use the water that we already have. But then, suppose you need pure nitrogen, 100% nitrogen, not air. Nitrogen can be separated out from air by a process of fractional distillation. Liquify the air (at very low temperatures) and the various components can be boiled off at different temperatures.
No.
I've never actually heard this term used. I suppose it might mean either dry ice or a mixture of dry ice and acetone (or dry ice and diethyl ether), dry ice being somewhat easier for most people to obtain than liquid nitrogen.
mostly from food.
D
Nitrogen