To successfully calculate the mass defect associated with the^19F nucleus. Mass

Question

To successfully calculate the mass defect associated with the^19F nucleus. Mass Defect is defined as the difference between the mass of an atom and the total mass of its proton, neutrons, and electrons. In the following problem, you will work through the calculation of the mass defect associated with the F nucleus. Calculate the total mass of the protons and electrons in F. Use 1.007825 amu as the mass of_1^1H (mass of a proton and an electron). Express your answer in atomic mass units to 6 significant figures. Calculate the total mass of the neutrons in F. Use 1.008665 amu as the mass of_0^1n (mass of a neutron). Express your answer in atomic mass units to 7 significant figures. Calculate the mass defect of F. Express your answer in atomic mass units to the fourth decimal place.

Explanation / Answer

Answer:

Part A:

There are 9 protons present.

1 proton molar mass is given i.e = 1.007825 amu.

9 protons x 1.007825 amu = 9.07425 amu (Total mass of protons)

There are 9 electrons present .

1 elcetron molar mass is 0.00054858
9 electrons x 0.00054858 amu = 0.00493722 amu.

Part B.

10 neutrons are present in 19F.

one neutron mass is equal to 1.008665 amu,

For 10 neutrons, 10 neutrons x 1.008665 amu = 10.08665 amu.

Therefore, the total mass of the protons + electrons + neutrons = 19.15708 amu

Part C:

Mass defect

The measured mass of 199F = 18.9984 amu.

Therefore, the mass defect = 19.15708 amu -18.9984 amu = 0.1587 amu

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