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A helium-4 atom falls from

A helium-4 atom falls from a height h into a tank of gaseous helium atoms at 300 K. What is h in meters if the temperature of
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2. asked by Crow
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Which statement correctly describes an atom of the element helium?A. An atom of helium has its valence electrons in it's first
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2. asked by Yui
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An ionized helium atom has a mass of 6.6*10^-27kg and a speed of 4.4*10^5 m/s. The atom moves perpendicular to a 0.75-T magnetic
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2. asked by Kelly
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An alpha particle is the nucleus of . . .a) an oxygen atom b) a helium atom c) a carbon atom d) a hydrogen atom e) a uranium
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One atom of Deuterium weighs 2.013553AMU. One atom of Helium weighs 4.002602AMU. In nuclear fusion, the process which powers the
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2. asked by robin
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A sealed container of volume 0.10 m3 holds a sample of 3.0 x 10^24 atoms of helium gas in equilibrium. The distribution of
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2. asked by Oli
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What is the chemically combined substance of a hydrogen atom and a helium atom. please help me because i really don't know this
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2. asked by Anonymous
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Why does the emission of an alpha particle always result in transmutation?(1 point)ResponsesThe atom is converted to helium.The
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Help with these two please.105. A radioactive metal atom decays (goes to another kind of atom) by emitting an alpha particle
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2. asked by Anna
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CH4 is the chemical formula for methane. Correctly identify the number of atoms of wach element present in this chemical
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