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1 June, 15:07

Calculate the mass defect for oxygen-16 given this dаta: mass of an oxygen-16 atom: 15.994914 amu mass of a proton: 1.00728 amu mass of a neutron: 1.00866 amu

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  1. 1 June, 18:07
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    The answer is 0.132606 amu.

    The mass defect (Δm) is the total mass of protons and neutrons minus the mass of the atom.

    mass of an oxygen-16 atom: 15.994914 amu

    mass of a proton: 1.00728 amu

    mass of a neutron: 1.00866 amu

    An oxygen atom has 8 protons and 8 neutrons. Therefore:

    Δm = 8 · 1.00728 + 8 · 1.00866 - 15.994914 = 8.05824 + 8.06928 - 15.994914 = 0.132606 amu
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