Or that neon is the second lightest inert gas‚ as well as being the second lightest noble gas after helium. Helium is the chemical element of atomic number 2‚ an inert gas that is the lightest member of the noble gases. Knowing this about helium can change your ways of seeing neon. To freshen up your memory about neon the definition of neon is the chemical element of atomic number 10‚ an inert gaseous element of the noble
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Process and importance of fusion in stellar evolution. Huge clouds of hydrogen atoms and gravity cause the atoms to be attracted to each other creating them to slowly move towards the centre of mass.The atoms then continue condensing until something happens.All of the atoms are trying to get to the centre of mass. While this is happening the temperature becomes 10 million Kelvin and at that point there is enough temperature and enough pressure to overcome the coulomb forces‚ bringing the two protons
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temperature‚ Hydrogen nuclei start to fuse together to form Helium and the star begins to release energy. This energy radiation production prevents further contraction of the star. It is now Main Sequence Star so it settles to an almost constant luminosity and temperature. The nearest main sequence star to Earth is the Sun. A star of one solar mass remains in main sequence for about 10 billion years‚ until all of the hydrogen has fused to form helium. Large main sequence stars have large gravitational forces
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atmosphere are hydrogen (82.5%)‚ helium (15.2%)‚ and methane (〖CH〗_4)(2.3%). Uranus appears to be greenish-blue because methane absorbs longer wavelengths of visible light. So when sunlight strikes the methane‚ the upper atmosphere loses it colors of red and yellow. Uranus’s atmosphere lacks water. The three main elements of Neptune’s atmosphere are the same as Uranus’s atmosphere‚ but the percentages are different. For Neptune hydrogen makes up 79%‚ helium 18%‚ and methane 3% of the atmosphere
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and the only difference is the radiation created by the decaying of it (Tritium | Radiation Protection | EPA). It is also easier for tritium to combine with any other lighter elements than normal hydrogen (protium). Tritium when decay become Helium-3‚ Helium with mass number 3. This happens when tritium breaks one of its
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10. Briefly explain how the nuclear fusion of hydrogen to helium produces energy. Be sure to include E=mc2in your response. In the equation‚ E=mc2‚ E represents energy (in joules)‚ m represents mass (in kilograms)‚ and c2is the speed of light squared. c2can be thought of as a conversion factor between mass and energy. Since cis such a large number‚ c2is even larger. This means that the tiny amount of mass in hydrogen and helium particles‚ multiplied by the large c value‚ results in an enormous
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representative elements that this method doesn’t work for is group 0. Those elements certainly have more than 0 valence electrons; in fact‚ all of them except for helium have 8 valence electrons. Why doesn’t helium have 8 valence electrons? Think for a moment about how many electrons helium has - it has a total of only two electrons‚ so helium only has 2 valence electrons. So generally speaking‚ the number of valence electrons stays the same as you go up or down a group‚ but they increase as you go
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September 10‚ 2013 ANSWER THE FOLLOWING QUESTIONS: • What was aviation as invented by the Montgolfier Brothers? • Aviation as invented by the Montgolfier Brothers consisted of balloons filled with hot air because they discovered that hot air cause a fabric to raise in the air‚ and it was more effective than using a gas lighter than air because the gas escaped from the balloon. • What were
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Experiment 1 The Heat Capacity Ratio of Gases Purpose The purpose of this experiment is to calculate the heat capacity ratio of gases‚ Helium‚ Nitrogen and Carbon Dioxide‚ and compare with their theoretical values. Introduction Thermodynamics is the study of heat as it relates to energy and work. There are various properties which all relate to each other when determining the characteristic of a certain substance. One of such properties is heat capacity‚ which is the amount of heat energy
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Question 1 | 1.61 points | Save | | You are standing on a scale in an elevator. Suddenly you notice your weight decreases. What do you conclude? | | | | | | | | The elevator is accelerating downwards. | | | The elevator is moving at a constant velocity downwards. | | | The elevator is moving at a constant velocity upwards. | | | Your diet is working. | | | The elevator is accelerating upwards. | | | | | | Question 2 | 1.61 points | Save | | Tidal
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