how many hydrogen atoms fuse to make helium?
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It takes four hydrogen atoms to fuse into each helium atom. During the process some of the mass is converted into energy. The difference between the mass of 4 H atoms and 1 He atom is 0.02862 AMU which is only 0.71% of the original mass.
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The nuclear fusion of hydrogen atoms into helium — the process that powers the Sun — promises an almost limitless supply of clean energy. But no facility has yet been able to achieve the level of heat and confinement needed for a reaction to generate more energy than it takes to produce.
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The magnified nucleus of the helium atom consists of two protons and two neutrons bound together by a strong nuclear force. The nucleus and each of its four particles are spherically symmetric. The size of the helium nucleus is about 1 fermi, or 1 fm, which is equivalent to 10-15 m.
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Answer; There are 6 atoms of hydrogen, 3 atoms of carbon and 1 atom of oxygen.
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The He+ ion is just like a hydrogen atom with two units of charge in the nucleus. Since the hydrogenic energy levels depend upon the square of the nuclear charge, the energy of the remaining helium electron should be just 4x(-13.6 eV) = -54.4 eV as observed.
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The helium ion, for example, is the product of alpha decay. Since atoms contain equal numbers of protons and electrons, and since elements are composed of atoms, all the elements are neutral.
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['Hydrogen (H)', 'Nitrogen (N)', 'Oxygen (O)', 'Fluorine (F)', 'Chlorine (Cl)', 'Helium (He)', 'Neon (Ne)', 'Argon (Ar)']
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Divide the mass of ordinary matter by the mass of a hydrogen atom (1.45×10^53 kg divided by 1.67×10^−27 kg). The result is approximately 10^80 hydrogen atoms. Originally Answered: How many atoms exist in the universe? Fact - The entire universe is made of atoms .
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The total mass of four moles of helium (He) is 16.0104 grams. Helium has an atomic mass of 4.0026 atomic mass units, which is the average mass of all...
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In its neutral state, Helium has two electrons in orbit about the nucleus. Model of a helium atom's nucleus with two protons and two neutrons. Helium is a relatively inert element, which when in its neutral state is quite unreactive due to a filled outer shell of electrons.
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An important fusion reaction for practical energy generation is that between deuterium and tritium (the D-T fusion reaction). It produces helium (He) and a neutron (n) and is written D + T → He + n. To the left of the arrow (before the reaction) there are two protons and three neutrons.
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Together, helium and hydrogen make up 99.9 percent of known matter in the universe, according to Encyclopedia.com. Even so, there is still about 10 times more hydrogen than helium in the universe, Nyman said. Oxygen, the third most common element, is about 1,000 times less abundant than hydrogen, she added.
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Hydrogen has 1 electron in the first shell (so one valence electron). Helium has 2 electrons --- both in the first shell (so two valence electrons).
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Proton-proton chain - This sequence is the predominant fusion reaction scheme used by stars such as the sun. Two pairs of protons form to make two deuterium atoms. Each deuterium atom combines with a proton to form a helium-3 atom.
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Three isotopes of hydrogen Most hydrogen atoms consist of just one proton and one electron, but some also have one or two neutrons.
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The two end C atoms each have one bond to middle C atom, so the number of hydrogen atoms on them is 4−n=4−3=3 . The middle C atom has two bonds going to the other carbons, so it has 4−n=4−2=2 hydrogen atoms.
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The molar mass that is the mass of 6.022 X 1023 atoms of helium is 4g.