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g The mass of He is 4.00 u. assuming it begins at rest what will be atom's recoil speed after it emits the photon
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The volume of helium in a blimp is 6.28 x 10^9 millimeters. the density of helium in the blimp is .1786 kilogram/meter^3. find the mass of the helium in the blimp.
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Which sample at stp has the same number of atoms as 18 liters of ne at stp
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In as 1°, 2°, 3°, or 4°. be to . : °b: °c: °d: ° : °b: °c: °d: ° : °b: °c: °d: °e: °f: °g: °h: ° : °b: °c: °d: °e: °f: °g: °h: °i: °
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g The mass of He is 4.00 u. assuming it begins at rest what will be atom's recoil speed after it emi...
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