Oxygen Definition and 376 Threads

hello! I want to know how oxygen pumps work. This photo displays one: http://www.ngk.co.jp/english/news/2008/image/0611_04.gif from: http://www.ngk.co.jp/english/news/2008/0611.html My question is, in order to pump the oxygen, does the oxygen have to go through the platinum electrode? or we...

Here is the scenario. An astronaut is conducting experiments inside of a laboratory module within a space station when all of a sudden, a fire breaks out. The astronaut escapes from the laboratory module he was currently using and then proceeds to seal it off using an airlock. He then...

Homework Statement Find the lewis structure for [CH3OH2]+ Homework Equations n/a The Attempt at a Solution I found the lewis structure to have a positive formal charge on the oxygen. I'm not sure why the oxygen would have the + f.c. since it is much more electronegative than fairly neutral...

Is oxygen useful in only in the production of ATP with the cells (aerobic cellular respiration)? If so, why one should die within second if the oxygen supply is cut off? Why oxygen is so critical to our survival?

You measure the concentration of O2 in seawater to be 5.0 mg O2/L H2O. Express this concentration as a percent. Question 2: The Earth's atmosphere contains 21% O2/L of air. How much more oxygen does the atmosphere hold than seawater from the previous question? So for question one I got 0.01%...

Hello! I am looking for a thermally stable material that will gather oxygen from air selectively. I suppose many metals can do that? And oxidise? Or maybe liquids? However, I want to apply an electrical current and either reverse the binding of oxygen or move the bound oxygen across the...

Im working on a problem regarding a SSME and need to figure out the balanced eq for LH2 and LOx. I thought it was simply.. H2 +0.5O2 > H2O however my professor has confirmed that it is not the case in this situation. I am stumped as to what it could possibly be, maybe excess H2? And am not...

Homework Statement I am trying to calculate the nuclear magnetic moment for Oxygen 15 but my answer differs strongly from the value quoted in literature. Homework EquationsThe Attempt at a Solution [/B] ##\mu_J = g_J \mu_N J## This isotope of Oxygen has an unpaired Neutron with ##J =...

I always wondered why they say water and photons created the first microbes which later evolved and produced oxygen which filled our oceans and atmosphere. So how could have water existed without oxygen? I tried to look up and came up with different explanations, but it doesn't make sense.

Now I'm aware of how at around 300 degrees C N2O breaks apart, resulting in more oxygen in the cylinders. I'm also aware that N2O cools down the air fuel mixture when it evaporates, increasing density and resulting in more volumetric efficiency. What I don't get, is why not just take in more...

hello guys, how to separate oxygen and hydrogen guys?

Question, let's say I'm in space and I have acces to fast nuclear reactor and a lot of Liquid Oxygen, could I convert a decent portion of the neutron into Protons using Oxygen 16 Neutron activation? How effective would it be? I found the following document on Oxygen neutron activation...

In any simple carboxylic acid there are two oxygen atoms then i have a confusion that which oxygen has more negative charge on it or which one has the most electron density on it?

According to Dr. M. Kaku, how a big bang theory supports when there was an absence of oxygen in the outer space?

Hello! I have read (I don't remember the source, and have it only in my notes now) that oxo acids can be strong if Y element has a high electronegativity. If generic formula for oxo acids is HnYOm, than if Y has high electronegativity, it will cause the acid to become strong because Y will be...

Homework Statement How many atoms of oxygen are present in 300 grams of calcium carbonate? molar mass of CaCO3 = 100g Homework Equations The Attempt at a Solution I don't know how to proceed. Can anyone please help me out by giving the forulae or steps on how to do this problem.

Homework Statement Hydrogen peroxide breaks down easily to give water and oxygen as follows: 2H2O2(aq)----> 2H2O2(l) + O2(g) Bottles of hydrogen peroxide are sometimes labelled as 10 volume as well as 3%. This means the volume of oxygen that can be liberated is 10 times the volume of the...

So I was wondering how come liquid rocket engines (operating in the lower atmosphere (such as launch stages)) are using Oxygen that they have packed on board. What I mean to say is why would the rocket need to waste space and mass bringing Oxygen with them in the launch stage when they could...

I believe the first life to appear on Earth appeared in the oceans of Earth. When I ask if life would have appeared on Earth without oxygen, I am asking if life would have appeared in the oceans of Earth or on land without oxygen. Would life have appeared on Earth without oxygen?

Please could someone explain to me what is meant by the follow sentence: "Intrinsic oxygen vacancies in the TiO2 structure might also play important roles as nucleation sites for cavitation." I understand the nucleation bit but what are "oxygen vacancies in the structure"? Any help would be...

Homework Statement one gram of each of the following gases is introduced into a 10 L container at 25 degrees C a) propane b) ethane c) methane d) pentane which gas will consume the greatest mass of oxygen upon complete combustion? The solutions says that the right answer is D. I do not know...

Homework Statement It's a simple problem. What is the total mass of an oxygen atom?Homework Equations Mass of electrons, protons, and neutrons, as well as their respective amount in an O atom The Attempt at a Solution Knowing the number of e, p, and n in an oxygen atom, I can calculate the...

Homework Statement 100 ml blood of lung vein contains 14 ml O2. The volume of blood in the left ventricle is 70 ml. Find the amount of O2 the blood absorbs in the lung for a minute. Homework Equations 100ml blood -> 14 ml O2 70 ml blood -> x The Attempt at a Solution Here's what I did 100ml...

Homework Statement I did this lab on percentage of oxygen in potassium chlorate and I got a percent error of about 30%. I now need to find three reasons for error, and human error does not count. I think one could be that the masses used in calculating the theoretical percentage of oxygen were...

Hello I recently read that the antarctic crocodile icefish (Channichthyidae) has colourless blood because it lacks haemoglobin. Apparently it can transport large amounts of oxygen around the blood in dissolved form because of its low body temperature (-1.8 to 2 degrees C). I was just after an...

So I'm curious, if you mix two parts hydrogen and one part oxygen in a bottle, how do they mix? I know that it wouldn't turn into water unless lit on fire. If the bottle was turned upside down and uncapped, would the oxygen fall out the bottom and hydrogen float to the top? Or are the two...

Homework Statement This is a solved example problem in my chemistry book: What mass of oxygen gas O2 is liberated when a 2.5 gram sample of sodium nitrate NaNO3 is heated? Please keep in mind that I am self-studying, I am not currently in chemistry class. Homework Equations 2NaNO3 ---> 2NaNO2...

A sample of sulfur having a mass of 1.28 g combines with oxygen to form a compound with a mass of 3.2g. What is the empirical formula. So what i did is found the mass of oxygen which is 1.92g . Then converted the 1.28g S to 0.04 mol. Then converted the 1.92g O2 (as it says oxygen, or should it...

Homework Statement How many oxygen atoms are there in one molecule of oxygen gas? How many oxygen atoms are there in one mole of oxygen gas? Homework EquationsThe Attempt at a Solution [/B] There are 2 oxygen atoms in one molecule of oxygen gas. There is 6.02x1023 oxygen atoms in one mole of...

As part of my project I am taking part in an experiment which involves the catalytic removal of oxygen through the use of hydrogen. Is there an equation to calculate the dissolved oxygen content so that I can compare the experimental results to theory Thanks

Homework Statement What would be the mass of oxygen in 2.5 x 102 g in CaCO3? Given: Mass 2.5 x 102 Molar Mass of CaCO3 which is 100.09 g/mol. Homework Equations mo=molar mass x number of o The Attempt at a Solution mo=100.09 g/mol x 3 mo=300.27 g of oxygen Can someone tell me if I got this...

hi, my name is jake, I am life in Borneo, the island us smoke caused the affected persons who are not responsible for the burning of our forests, and we are currently in desperate need of oxygen, because here there is only smoke. I saw a youtube video tutorials on how to separate oxygen and...

Hi, I am confused about the difference (if there is any?) between the movement of oxygen ions and oxygen vacancies inside the solid oxides. In some literature I find they are taking about the movement of negatively charged oxygen ions inside the metal oxides, while in some other cases it is...

http://www.sciencedaily.com/releases/2015/10/151006192107.htm A new study shows that iron-bearing rocks that formed at the ocean floor 3.2 billion years ago carry unmistakable evidence of oxygen. The only logical source for that oxygen is the earliest known example of photosynthesis by living...

Homework Statement The oxidation state of oxygen in all compounds is -2, except in peroxides such as H2O2, Na2O2 and BaO2 where it is -1. If it is -1, then why can't we write H2O2 and Na2O2 as HO and NaO respectively?

Hello, over the past few days I've been looking at glowing ionization tubes on YouTube. there seems to be this innate correlation and association between ionization chambers and noble gasses, like xenon, argon and neon. i was wondering is it possible for oxygen or nitrogen to glow like them ...

I am developing a model of dissolved oxygen (DO) consumption by yeast in the fermentation process. I would like to use a solution that will predictably take up DO over the course of 1 or 2 hours so that I can test a more basic model with the laboratory equipment I have. This would prove I have...

Oxygen is not definitive evidence of life on habitable extrasolar planets The Earth's atmosphere contains oxygen because plants continuously produce it through photosynthesis. This abundant supply of oxygen allows life forms like animals to flourish. Therefore, oxygen had been thought to be an...

Does plasma transport oxygen?

Hello all, I have an oxygen tank that is 10 L in volume, pressurized at 500 barr (pressure can be adjusted down to 1 barr out of the tube), and I want to 'bubble' the oxygen into a beaker of water. I will simply use a tube (diameter is around 0.5 cm) connected from the tank and with the other...

I have a question, What happen you Ignite hydrogen and oxygen in very strong metal close chamber Will it explode to break the chamber?

its is fuel efficient and pollution free

Homework Statement ___ In 1866, the German scientist Adolph Kundt developed a technique for accurately measuring the speed of sound in various gases. A long glass tube, known today as a Kundt's tube, has a vibrating piston at one end and is closed at the other. Very finely ground particles of...

Hello, I was wondering if anybody here has knowledge about anion production in the air and how to negativity charge a room, like a waterfall which can produce 100,000PPM anions in the air and the water keeps the positive charge. Some methods include arcing, plasma, ultraviolet, water collision...

I know that it is possible for 2 H2O molecules to gain and lose electrons. This reaction looks like this: 2 H2O -> H2O+ + H2O- This causes 1 of the oxygen atoms to be hypervalent since it now has 9 electrons. The other oxygen has only 7 electrons. The electron on the hypervalent oxygen came...

Hello, Say I have air circulating in a low pressure loop at 200C, and there are two openings; one for introducing steam and another that allows excess gases to exit. Through experimentation, I know that purging this loop with steam will bring down the oxygen content of this loop to 0% (unless...

Hi all, I just hear from a friend that in carburetored cars there are still O2 sensors (not all cars). I not sure the purpose of O2 sensor in this case. Could anyone help ? Thanks

Hi, I'm working on a commissioned story, the basic jist of it is aliens colonize earth, begin a lengthy process of terraforming it to fit their toxic homeworld atmosphere. I read somewhere chlorine is the most viable alternative to oxygen in terms of energy production and it's fairly common in...

Homework Statement there is an expandable container with 1m3 of hydrogen and 1/2 m3of oxygen at stp. the gas is ignited.what is th final volume if there is no heàt lost and the pressure outside the container is 1atm? assume complete combustion Homework Equations other than the ideal gas...