1) who discovered:\na) oxygen\nb) sodium\n2).. and when?
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Oxygen - \nDate of Discovery: 1774\nDiscoverer: Joseph Priestly\nName Origin: From the Greek words oxus (acid) and gennan (generate)\nUses: supports life\nObtained From: from liquid air \n\nSodium -\nDate of Discovery: 1807\nDiscoverer: Sir Humphrey Davy\nName Origin: soda (Na2CO3)\nSymbol Origin: From the Latin word natrium (sodium)\nUses: medicine, agriculture\nObtained From: table salts and other foods
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Who created that "all matter and energy".  Who caused that concentrated mass of material to explode.  Who created that single-celled organism.\n\nyes, i believe God is the origin of everything.
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1.) Paul and Saul\n2.) Noah had the ark not moses
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Thomas A. Edison\n\nHow do you give me 12 pts?
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Joseph Priestley, a chemist and minister, discovered that when he isolated a volume of air under an inverted jar, and burned a candle in it, the candle would burn out very quickly, much before it ran out of wax. He further discovered that a mouse could similarly "injure" air. He then showed that the air that had been "injured" by the candle and the mouse could be restored by a plant. In 1778, Jan Ingenhousz, court physician to the Austrian Empress, repeated Priestley's experiments. He discovered that it was the influence of sun and light on the plant that could cause it to rescue a mouse in a matter of hours. In 1796, Jean Senebier, a French pastor, showed that CO2 was the "fixed" or "injured" air and that it was taken up by plants in photosynthesis. Soon afterwards, Theodore de Saussure showed that the increase in mass of the plant as it grows could not be due only to uptake of CO2, but also to the incorporation of water.
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Which science? In Chemistry, Na is the symbol of Sodium (Natrium, in latin). But Na03 makes no sense, there's no such isotope.\n\nEDIT: People, he didn't type an "O" from oxygen but a zero. Try copying it to your notepad and you'll see the difference.
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(The) second experiment was to observe the reaction when a magnesium ribbon was ignited. The ribbon was put to the flame of a burner (delete ,) and was ignited. The reaction was very (intensive) (change to intense), and (burned with a) (delete was with) very bright white light. Usually when a substance is ignited in air, it reacts with H2 or O. In this case, because the Mg was the positive ion, it must have reacted with oxygen, (which is a ?)negative ion. In this experiment, because Mg was joined to O2 to make 2MgO of different composition, this was a combination reaction.\nThe third experiment 0.1 M CuSO4 and 6 M NH3 were used. CuSO3, a Sky blue liquid,  was place in a test tube, and then 1 drop of 6 M NH3 was added. Right after NH3 was added, the top of (the) liquid changed to navy color.  After the liquid was stirred the color of the liquid changed to a blue that was darker than the color of CuSO3. Ten more drops (of CuSO4?) were added to the contents, and the color of (the) contents changed to a violet color.
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a) 36\nb) i just found the answer for b : it is 6 because its a p orbital
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1) is false, all the elements in living things can be found in non-living things\n\n2) this more tricky, what are these 4 elements most common in plants? I'm guessing: Hydrogen and Oxygen, (from water) Carbon, and . . .nitrogen???\nall these can be found in animals\nare you sure the question is asking about elements? elements in living things are pretty common to another. Its the compounds (hemoglobin, chlorophyll, etc) that get rather unique\n\ndo a little research, if some one cannot explain how they got the answer to a T/F question, you can't be sure they are just guessing
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1. contaminated the atmosphere with oxygen 2.5 billion years ago\nd- noncyclic photosynthesis\n\n2. uses NADH from the matrix\nc- electron transport\n\n3. poisons by stopping electron transport in respiration\na- cyanide\n\n4. acts as the terminal electron acceptor in respiration \na- oxygen\n\n5. the most ancient glucose oxidizing pathway\nb- glycolysis\n\n6. Produces NADH in the cytoplasm\ne- citric acid cycle\n\n7. Couples mechanical energy to ATP production\nc- ATP synthase\n\n8. Generates a proton gradient\nb- triose phosphate isomerase\n\n9. Fixes carbon in Photosynthesis\nd- RUBISCO\n\n10. Generates glyceraldehyde 3-phosphate\ne- calvin cycle and glycolysis\n\nPS; I hope you get better help; I am not sure of some of these!\n\nIt may be:\n\n8. Generates a proton gradient\n\ne- calvin cycle and glycolysis\n\nand\n\n10. Generates glyceraldehyde 3-phosphate\n\nb- triose phosphate isomerase\n\nIn fact, I am trying to recall if the triose relates to glyceraldehyde.  Maybe you can do a bit more searching?
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the first answer is definitely "bacteria" and the second has to be "cyanobacteria"
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Actually when pure oxygen was first produced among tests of flammability somebody decided to put an animal in an enclosure with pure oxygen.  I think it was a mouse.  They observed that the mouse lived significantly longer in pure 02 than in normal air.
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JOSEPH PRIESTLY- DISCOVERED OXYGEN\nROBERT BOYLE- He was one of the most significant of British scientists. More than anyone else, he invented the modern experimental method. His profuse published findings on pneumatics, chemistry and many other scientific topics were widely influential in providing empirical support for a mechanical view of nature.Boyle was born on 27 January 1627, youngest son of Richard Boyle.In 1649 he ‘discovered' experimental science, and this was to dominate his entire subsequent career.\nALFRED NOBEL-Alfred Nobel was born in 1833 in Stockholm, Sweden. His family was descended from Olof Rudbeck, the best-known technical genius of Sweden's 17th century era as a great power in northern Europe.  \nNobel invented dynamite in 1866 and later built up companies and laboratories in more than 20 countries all over the world.  \nMARIE SKLODOWSKA CURIE- She discovered the mysterious element radium. It opened the door to deep changes in the way scientists think about matter and energy. She also led the way to a new era for medical knowledge and the treatment of diseases.\nANTOINE LAURENT LAVOISIER- He was, amongst other things, a chemist, economist, and public servant. He is most noted for his discovery of the role oxygen plays in combustion. \n\nLavoisier, the son of a very prosperous lawyer, was born in Paris on August 26, 1743. He was educated at the College des Quatre Nations where he studied a broad range of academics. He was expected to follow in his fathers footsteps and even obtained his licence to practice law in 1764 before turning to a life of science. In particular, he turned to geology. From 1763 to 1767 he studied geology under Jean Etienne Guettard.
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This site should help you.\n\nhttp://sparknotes.com/chemistry\n\nGood luck.
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Philo T. Farnsworth \nhttp://www.ideafinder.com/history/inventors/farnsworth.htm
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sulfur forms S8...Cl forms Cl2...O is found as O2...N as N2\n\nps im a chem prof so i know;)
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Priestly was involved in the discovery of the element oxygen.\n\nHowever, he isn't given as much accolades as you might expect, largely because he endorsed the theory of phlogiston until his end.\n\nThat theory is a really confusing and hard to explain theory of how materials react chemically, and why some materials get lighter or heavier when burned. \nIt's very convoluted, and has a tough time getting to fit w/ the observed facts, but Priestly insisted on it despite improvements w/ atomic/molecular theory which worked far better.\n\nSo, if you have teachers who endorse "Evolution" (biological evolution) as a theory, you might want to remind them that this has happened before.  A dumb, confusing, illogical theory was INSISTED as being true by the experts, but was later dismissed as useless.