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13 Dec 2019

An atom of 109Ag has an experimentally determined nuclear mass of 108.9048 amu. Calculate the mass defect, ?m, in atomic mass units (amu).

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Collen Von
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17 Dec 2019

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Related questions

An atom of Mg has a mass of 24.31 amu(atomic mass units).

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What is the mass of the mg atom in:

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Nucleons The term nucleon refers to the particles found in the nucleus of an atom, namely protons and neutrons. A single hydrogen atom (one proton plus one electron) has a mass of 1.007825 amu. A single neutron has a mass of 1.008665 amu. Note that amu stands for "atomic mass unit" and is sometimes abbreviated with the symbol u. 1 u is equivalent to 1.6605387×10−27 kg. Mass Defect The total mass of the individual nucleons in an atom is always greater than the actual measured mass of the atom. The difference is called the mass defect. Binding Energy The mass defect of an atom corresponds to an amount of energy called the binding energy. Binding energy can be calculated using Einstein's equation, E=mc2., where E is energy in joules, m is mass is kilograms, and c is the speed of light, 2.998×108 m/s.

Part A: Calculate the mass defect of the nitrogen nucleus 14 7N. The mass of neutral 14 7N is equal to 14.003074 atomic mass units.

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Part B: Calculate the binding energy E of the nitrogen nucleus 14 7N (1eV=1.602×10−19J). answer: 104.7 MeV Part C: Calculate the binding energy per nucleon of the nitrogen nucleus 14 7N.

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Part D: Calculate the mass defect of the helium nucleus 52He. The mass of neutral 52He is given by MHe=5.012225amu.

Part E: Calculate the binding energy E of the helium nucleus 52He (1eV=1.602×10−19J).

Part F: Calculate the binding energy E of the helium nucleus 52He (1eV=1.602×10−19J).

A Sample of cesium-137 has an activity of 8.00 mCi. How many micrograms of Cs-137 are present in the sample?

Atomic Mass 135.9073113 amu Nuclear Mass 135.8771394 amu Half-life Cs-136 13.16 D

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