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labwork [276]
3 years ago
5

The most accepted theory about the origin of Earth is that it formed by a process called planetary _____. differentiation accret

ion condensation mixing
Biology
1 answer:
ikadub [295]3 years ago
7 0

Answer:

The most accepted theory about the origin of Earth is that it formed by a process called planetary accretion

Explanation:

The most accepted theory about the origin of Earth is that it formed by a process called planetary accretion. In this process, the Earth is believed to have been formed from a cloud of gas and dust that remained following the Sun's formation. This cloud of gas and dust is referred to as the solar nebula.

Differentiation refers to the process by which the various layers of the earth were formed; core, mantle, and crust

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Answer:

Explanation:

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Mass of a neutron = 1.00866amu

Unknown:

Mass defect = ?

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           Number of neutrons = 8

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Solution

The mass defect examines the difference between the actual mass of an atom and sum of masses of the nucleons.

The mass of an atom is concentrated in the nucleus which contains protons and neutrons. Electrons have little to no weight compared with the nucleons.

    To calculate the mass defect, we first know the mass of the nucleons first:

           1 proton has a mass of  1.00728amu

           8 protons will weigh: (8 x 1.00728)amu = 8.05824amu

For the neutrons:

          1 neutron has a mass of 1.00866amu

          8 neutrons will weigh: (8 x 1.00866)amu = 8.06928amu

Mass of the nucleons = mass of protons + mass of neutrons

                                   = 8.05824amu + 8.06928amu

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The mass defect = mass of the nucleons - mass of the atom

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