comprised of two atoms of hydrogen and one atom of oxygen bonded together has many complex properties. The molecule maintains a bent shape due to its tetrahedral arrangement and the negative lone pair of electrons on the oxygen. The electrons from both hydrogen and oxygen are joined covalently but the difference in electronegativity lets the electrons from hydrogen get pulled slightly toward the oxygen therefore making the hydrogen positive and the oxygen negative (a dipole molecule). Hence water being
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An atmosphere may be retained for a longer duration‚ if the gravity is high and the atmosphere’s temperature is low. Some planets consist mainly of various gases‚ but only their outer layer is their atmosphere.” Air is mainly composed of nitrogen‚ oxygen‚ and argon‚ which together constitute the major gases of the atmosphere. The remaining gases are often referred to as trace gases‚ among which are the greenhouse gases such as water vapor‚ carbon dioxide‚ methane‚ nitrous oxide‚ and ozone. Filtered
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4-1. Import Data for Nitrogen from 1999 to 2010 YEAR 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 TOTAL GROSS KILO 3‚944 68‚797 2‚025‚611 10‚503 4‚270 127‚578 32‚905 6‚923 82‚989 5‚186 8‚116 1‚257 2‚378‚079 Table 4-2. Import Data for Oxygen from 1999 to 2010 YEAR 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 TOTAL GROSS KILO 1‚334 76‚212 30‚593 1‚549 135‚721 6‚100 21‚695 33‚108 7‚366 87‚445 83‚205 52‚556 536‚884 Table 4-3. Market segmentation (Spiritus Group) REVENUE (BILLION
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into the chamber‚ what will happen as the air goes through the carbon dioxide absorbent granules? 3. Will the lid go back up to its starting position if the subject breathes out normally? 4. As the subject breathes steadily‚ they will use up oxygen and replace it with carbon dioxide. What will happen to the total volume of air in the spirometer? Investigation: collecting data about normal breathing a. Under your teacher’s supervision‚ collect data by making a trace as a subject breathes
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How is it that 4 out of the 118 elements comprise over 96% of all living organisms? It is due to their reactive nature and ability to form bonds. One might ask why or how they are so reactive with other elements. Just as anything else in the universe seeks stability‚ so do atoms. Each of these 4 atoms seeks stability through their electrons. For example‚ hydrogen has 1 electron in its valance shell and it has the ability to fill that shell with up to 2 electrons thus it seeks another atom that
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Sulfide). This pyrite is very reactive. It is usually the smaller crystals of pyrite found in ASS. The pyrite reacts with oxygen to create sulphuric acid (therefore disturbing the soil creates the acid‚ as the pyrite is exposed to the air). The smaller pyrite framboids (raspberry shaped granules) are more reactive than the larger ones as there is more surface area exposed to the oxygen. How does the Pyrite get there? The production of pyrite is a very specific procedure‚ requiring certain conditions‚
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Schmidt-Nielsen‚ 1997‚ 5th edition)‚ in term of but the transportation of oxygen and carbon dioxide by diffusion in human is insufficient‚ this distribution is enabled by a movement of fluid called blood‚ In effect human body use one molecule found in the red blood cell called haemoglobin‚ on the other hand the haemoglobin can be define as a molecule found in the red blood cell which deliver or transport oxygen to the rest of body muscles and tissues. In this our essay we are going to
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formed from reaction of ammonia and oxygen. Nitric acid is a colourless acid when it’s pure‚ or can be found yellow or red. This acid can be very corrosive to eyes and skin and can cause severe burns to human skin and tissues. It is miscible to water‚ and has a very pungent smell. Nitric acid is very reactive and can is able to melt many metals‚ and non metals. As a solution‚ nitric acid is known as a good conductor of electricity. When combining ammonia and oxygen‚ water and nitrogen‚ it is known
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the conditions on early Earth and the origin of organic molecules. - Conditions of early Earth: Massive oceans existed Only small landmasses above the surface of the water No ozone layer Large amounts of radiation reached the Earth No free oxygen in the air Large amounts of volcanic activity; heat‚ ash‚ dust and gases into atmosphere Violent electric storms common Atmosphere contained some water vapour (H2O)‚ hydrogen (H2)‚ hydrogen cyanide (HCN)‚ a lot of carbon dioxide (CO2)‚ nitrogen
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clothes. Catalyse is an enzyme found in all living cells. It makes Hydrogen Peroxide decompose into water and Oxygen. We will be measuring the amount of Oxygen released from the Hydrogen Peroxide. In order to do this we will use a measuring cylinder. This piece of apparatus measures the amount of Oxygen given off‚ measuring in cm3. This will help us measure the amount of Oxygen more accurately. To make the test fair‚ the following parameters must remain constant during the experiment
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