This element makes up about 78% of normal dry air by volume
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Gases of the Air  Composition of Dry Air. Substance. % by volume. Nitrogen, N2. 78.08. Oxygen, O2. 20.95. Argon, Ar. 0.93. Carbon dioxide, CO2. 0.033. Neon, Ne. 0.0018.
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What Is the Atmosphere Made Of? - Science Terrific!  There are many things in the atmosphere, but basically it is made up of two different elements which are gases. Measured by volume (not weight) completely dry air contains approximately 78% nitrogen and 21% oxygen with about 1% of everything else.
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Universal Industrial Gases, Inc: Composition of Air - Components ...  Standard dry air, which is mainly composed of three gases: nitrogen (about 78%), oxygen (about 21%), and argon (about 1%). Together, these three gases make up 99.96% of dry air.
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What Is Air Made of? | Wonderopolis  ... you breathe? Which element makes up most of the air around you? ... Around 78% of air is actually made up of another common gas called nitrogen. If you're...
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What Is the Atmosphere Made Of? - Science Terrific!
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Specifying - Western Wood Products Association  S-DRY and S-GRN lumber should not be mixed in a horizontal framing system .... S-DRY, KD or KD-HT - 19% maximum MC moisture content ... References to air dried or kiln dried indicate the method of drying or ... Keep in mind that DRY for the clear grades means 15% MC, whereas DRY for knotty grades means 19% MC.
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If the air is 78% nitrogen and 21% oxygen, why do we say we ...  We breathe in everything, whether it's good, bad or useless. If it's a gas or suspended ... But it is the O2 in air that is absorbed (partly) in blood by haemoglobin, ... However, the nitrogen we breath is not used in our body, and thus we exhale the ... have used nitrogen as our oxygen (given >70% of air is N) and if not, why not?
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CFCs - The Ozone Hole  One of the elements that make up CFCs is chlorine. ... The ultraviolet radiation at this altitude breaks down CFCs, freeing the chlorine. ... began in the late 1970s after the first warnings of damage to stratospheric ozone were published. ... in the lower atmosphere, enabling them to break down before reaching the ozone layer.
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Universal Industrial Gases, Inc: Composition of Air - Components ...  Standard dry air, which is mainly composed of three gases: nitrogen (about 78%), oxygen (about 21%), and argon (about 1%). Together, these three gases...
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Why don't we breathe nitrogen when it makes most of the air?  Apr 25, 2014 ... Why do we always tend to breathe oxygen, not hydrogen and nitrogen? ... Air that we inhale (at sea level) is about 78% N 2 , 20.9% O 2 , 1% argon, ... Animals use oxygen as a chemical energy source because oxygen gas can react with ... Both carbon and nitrogen can be made to react with oxygen, but...
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Air consits of 21% oxygen, 78% nitrogen and 1% argon by  Aug 11, 2011 ... Air consits of 21% oxygen, 78% nitrogen and 1% argon by volume. ... ideal gases then because the same volume of any gas contains the same...
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Page 1  | PERIOD: D^* 2 NAME: - NOVA: Hunting the Elements 1 ...  When copper is combined with another element, t n , it makes bronze, the first ... The oxygen that powers all those explosions makes up 2-\ } of our atmosphere. ... six CHNOPS elements make up 97% of the weight of his body, but what about th ... In total, the human body uses more than 25 elements in ways and quantities...
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Hydrogen-Helium Abundance - HyperPhysics  There is a window of uncertainty, but it is clear that hydrogen and helium make up 98% plus of the ordinary matter in the universe. This high percentage of...
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Which element comprises most of Earth's atmosphere? | Reference ...  Nitrogen accounts for most of the Earth's atmosphere in volume. Oxygen ranks second. Together, nitrogen and oxygen compose 99 percent of the atmosphere's...
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Which elements make up the air we breathe? | Reference.com  Air is made up of oxygen, nitrogen and carbon dioxide. It consists of approximately 78 percent nitrogen, 20 percent oxygen and trace amounts of carbon...
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How is it possible that we inhale only oxygen from the atmosphere ...  It isn't possible. (grin) When you inhale, you inhale the entire mix of gases in the atmosphere. ... Most of this gas is Nitrogen (N2) at around 80%, which is es. ... 20% of oxygen gas (O2) inhaled, you extract a small percentage and breathe back out a ... covered cilia (nose hairs) that solid particles can latch onto, but not gases.
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the water cycle - SSAG  for example, is composed of about 70% water, and jellyfish are 95% water. Water ... When the primary and secondary consumers die, their organic matter enters the .... 5. What function do plants have in the forest in the carbon cycle? 6. How is carbon dioxide returned to the atmosphere? ... What percent of the air is nitrogen?
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Why nitrogen is 78% in the atmosphere? - Quora  The answer lies mostly in three facts: 1. nitrogen is volatile in most of its forms. 2. it is unreactive ... N2 gas is made up of N triple bond N. Since there is a triple bond in the diatomic ... Nitrogen only reacts with oxygen in car engines. ... is wrong - the level of nitrogen in air actually fluctuates but broadly is stabilized around that...
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J! Archive - List Final Jeopardy! clues - Season 19  ... says he needs women "more than the food I eat,... than the very air I breathe" ... about 63%, there are more atoms of this element than any other in your body...
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Trees Help Us Breathe | IIP Digital  May 24, 2011 ... Trees produce nearly one-third of the oxygen in our atmosphere. ... estimated 70 percent of Earth's oxygen through the photosynthesis process ... That makes our planet the only member of the solar system with so much oxygen for living ... This is another reason trees are often called the lungs of the world.
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Jeopary Questions page 1892 - INVENTORS & INVENTIONS ...  AN "A" IN SCIENCE: This nearly transparent 3-syllable envelope of gases surrounding the Earth is about 78% nitrogen  IT'S THE BERRIES: The 1st important...