large/12904/worldswithinworlds_v1-3_1904_librivox_64kb_mp3/worldswithinworlds_02_asimov_64kb_7
large/12904/worldswithinworlds_v1-3_1904_librivox_64kb_mp3/worldswithinworlds_02_asimov_64kb
English
12904
It is for that reason that a great deal of energy (mostly in the form of heat) is given off if a jet of hydrogen gas and a jet of oxygen gas are allowed to mix in such a way as to form water. IT IS FOR THAT REASON THAT A GREAT DEAL OF ENERGY MOSTLY IN THE FORM OF HEAT IS GIVEN OFF IF A JET OF HYDROGEN GAS AND A JET OF OXYGEN GAS ARE ALLOWED TO MIX IN SUCH A WAY AS TO FORM WATER
es apart, and it is even harder to pull oxygen molecules apart. You have to supply about 12% more energy to pull an oxygen molecule apart than to pull a hydrogen molecule apart. Naturally, if you let 2 oxygen atoms come together to form an oxygen molecule, you get back 12% more energy than if you allow 2 hydrogen atoms to come together to form a hydrogen molecule. It takes a considerably larger amount of energy to pull apart a water molecule into separate atoms than to pull apart either hydrogen or oxygen molecules. Naturally, that greater energy is also returned once the hydrogen and oxygen atoms are allowed to come back together into water molecules. Next, imagine pulling apart hydrogen and oxygen molecules into hydrogen and oxygen atoms and then having those atoms come together to form _water_ molecules. A certain amount of energy is put into the system to break up the hydrogen and oxygen molecules, but then a much greater amount of energy is given off when the water molecules form. IT IS EVEN HARDER TO PULL OXYGEN MOLECULES APART YOU HAVE TO SUPPLY ABOUT TWELVE PER CENT MORE ENERGY TO PULL AN OXYGEN MOLECULE APART THAN TO PULL A HYDROGEN MOLECULE APART NATURALLY IF YOU LET TWO OXYGEN ATOMS COME TOGETHER TO FORM AN OXYGEN MOLECULE YOU GET BACK TWELVE PER CENT MORE ENERGY THAN IF YOU ALLOW TWO HYDROGEN ATOMS TO COME TOGETHER TO FORM A HYDROGEN MOLECULE IT TAKES A CONSIDERABLY LARGER AMOUNT OF ENERGY TO PULL APART A WATER MOLECULE INTO SEPARATE ATOMS THAN TO PULL APART EITHER HYDROGEN OR OXYGEN MOLECULES NATURALLY THAT GREATER ENERGY IS ALSO RETURNED ONCE THE HYDROGEN AND OXYGEN ATOMS ARE ALLOWED TO COME BACK TOGETHER INTO WATER MOLECULES NEXT IMAGINE PULLING APART HYDROGEN AND OXYGEN MOLECULES INTO HYDROGEN AND OXYGEN ATOMS AND THEN HAVING THOSE ATOMS COME TOGETHER TO FORM WATER MOLECULES A CERTAIN AMOUNT OF ENERGY IS PUT INTO THE SYSTEM TO BREAK UP THE HYDROGEN AND OXYGEN MOLECULES BUT THEN A MUCH GREATER AMOUNT OF ENERGY IS GIVEN OFF WHEN THE WATER MOLECULES FORM
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