Nitrogen Definition and 220 Threads

How big would a spherical cloud of molecular nitrogen at a uniformed pressure of 1 atm (1x10^5 Pascal) and a temperature of 300 K have to be for it to collapse under the mutual gravitational attraction of its molecules? i.e., What is the critical radius for Jean's collapse of a nitrogen cloud...

Liquid Nitrogen and Dry Ice Hi I am doing an experiment for my chemistry independent project which is on doing super conductors, well i am doing one wherre you take YBa2Cu3O7 - the so-called "1-2-3" superconductor and put it in liquid nitrogen and it makes a rare Earth magnet levitate above it...

I've done some browsing on Gleocapsa and found out that it is unicellular. I can find them in wet mounts, ponds, moist soil, damp or wet areas. I also found out that Gleocapsa is a nitrogen fixer. My question is, since Gleocapsa is surrounded by a clear, gelatinous coating which makes one or...

What do you think is better? Lets start a debate!

Hi, I have started Plysics 20 by correspondence and I can't find the answer to this question: The reason that liquid nitrogen temperature superconductors are important is that liquid nitrogen costs less than liquid helium. New technologies to store liquid helium have been developed in the...

I just read that life evoles to adapt to its enviroment. So how come life most frequentley needs oxygen for survival, rather than the more abundant nitrogen? :rolleyes:

I have been having difficulties with this problem and I was wondering if I could get some help with it. Q. What is the rms speed of nitrogen molecules contained in a 7.0 m3 volume at 4.20 atm if the total amount of nitrogen is 1600 mol? I figured I would have to use this equation to solve...

Hey guys, i was wondering what would the graphs be of various attributes of a container of nitrogen while its being compressed. What would the Pressure graph look like, the volume graph, and the temperature graph look like? I was wondering about how they make liquid nitrogen and what the...

I’m puzzled by these two oxides of nitrogen, especially with NO, how do they exist, what favors them? If nitrogen has 1s2 2s2 2 px1 py1 pz1 configuration how or why does he form compound with only one oxygen atom ? Nitrogen has +1 oxidation number here right? So by what kind of connection...

Does Nitrogen (N2) react with anything?

Hi ppl, I have this question. I have the MF of a substance A : C7H7O2N. I have three pieces of info which should indicate a structural property of this substance:i) A reacts with sodium carbonate to give off CO2. I thought this might indicate an ionic structure? then ii) A will form a coloured...

would nitrogen form NCl3 and NCl5 as PCl3 and PCl5?

So i have been doing thsi question for about a week now and it's about liquid nitrogen. Here it is. Liquid nitrogen is used in many low-temperature experiments. It is widely available, and cheaper than gasoline! How much heat must be removed from room temperature (20C) nitrogen gas to...

Hi. Can someone give me a hint to how to calculate total mass of nitrogen in the atmosphere. I've calculated the mass of all the atmosphere, I got the percent by volume of nitrogen to be 78.03 %. I converted the mass of the atmosphere to Liters. I got the volume of nitrogen to be 3.18e21 L and...

Isomers Of DiNitrogen Difluoride.. Why Nitrigen Difluorife(N2F2) Shows Geometric Isomerism?? Can Anybody Help Me Please? Thanks!

If one had no way of eating any protein, but could eat carbohydrates and something which had nitrogen that wasn't a protein, could their body assemble proteins to use, or does that mechanism not exist?

I was just reading something in my chem book about the nitrogen fixation process of bacteria. It said that trees need the bacteria to do this process. As a side thought, I think trees are mostly carbon, and a seed grows relatively fast. I was just wondering where does a seed get this large...

Problem 2. Liquid nitrogen, which has a boiling point of 77 K, is commonly used to cool substances to low temperatures. How much energy must be removed from 1.4 kg of gaseous nitrogen at 77 K for it to completely liquefy? Assume the latent heat of liquid nitrogen is 2.01 *10^5 J/kg Answer...

My friend and I have a lot of ideas for liquid nitrogen experiments (and we will be safe! :)), but we have no idea where to order it from. If from an online source, try to be specific. If in reality, try to give a little input on the process. Thanks.

I cannot for the life of me solve this. Maybe one of you can help? The solubility of N2 in blood at 37 degrees C and at a partial pressure of 0.8atm is 5.6 X 10-4mol/L. A deep-sea diver breathes compressed air with the partial pressure of nitrogen equal to 4.0atm. Assume the the total volume...