Oxygen Definition and 360 Threads

i have a multi-part question which is fine except for two areas. 1) how many oxygen molecules traveling at this speed (i already have the speed calculated) are necessary to produce an average pressure of 1.00 atm? 2) calculate the number of oxygen molecules that are actually contained in...

WHy OXygen can react with metal?As i know , oxygen(O2) is bonded by covalent bond and it should be neutral charge. So how can the metal react with oxygen?

On average, how long can a human brain survive without oxigen without being noticably damaged? Thanks.

Now for another question on the same subject You all know how in the human body the oxygen binds to the iron compound inside the hemoglobin. and that carbon monoxide has a 200 to 1 affinity to oxygen within the hemoglobin. But anyway my question is if The Iron inside a cell pulls and holds on...

I remember in 8th grade I was sick the day my class did this, and no one I talk to seems to remember how it was done beyond there was a 9volt battery involved. Does anyone know how water can be separated into hydrogen and oxygen?

Hello, I know I should have knowledge of this, but I can't seem to remember very well what happens in combustion reactions with a very short supply, limited supply, and abundant supply of oxygen. What is the difference? I know complete combustion hands down, but what happens in a problem such...

photosynthetic algae - photosynthesis takes place during daylight, CO2 is used and O2 is released. At night, aerobic respiration occurs, O2 is used and CO2 is given off. If these two processes are in balance with each other (or are they?), how would an algal bloom decrease the O2 level in...

I came across an amazing fuel cell created by Lawrence Livermore National Laboratory. It's actually called a http://www.llnl.gov/IPandC/technology/profile/transportation/UnitizedRegenerativeFuelCell/index.php which has a duel mode. Not only can it produce electricity from oxygen and hydrogen...

Hello people I am currently having problems doing my AS exam paper. Can you please help? The question is: During the cardiac cycle, the pressure in the left ventricle falls to a much lower level than in the aorta. Give an explanation for this difference? I have no idea about this...

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