The Nucleus

Question 1

How many protons does Thorium have? How many neutrons does Thorium-234 have? Calculate the mass defect for the isotope thorium-234 = amu

Revolt · Accepted Answer

"90"; "144"; "1.85864"; 90

Question 2

The nuclear binding energy of one nitrogen-14 atom is x 10A J. Round to 3 significant digits.

Revolt · Accepted Answer

1.62

Question 3

Calculate the mass defect for the isotope thorium-234 = amu

Revolt · Accepted Answer

1.85864

Question 4

Mass defect for the isotope thorium-234 = 1.85864 amuHow many kilograms does the mass defect represent?

Revolt · Accepted Answer

3.09 × 10-27 kg

Question 5

Kilograms represented by the mass defect for thorium-234 = 3.09 × 10-27 kgWhat is the nuclear binding energy for thorium-234?

Revolt · Accepted Answer

2.78 × 10-10 J

Question 6

Calculate the mass defect and the nuclear binding energy of nitrogen-14.The mass of a proton is 1.00728 amu, and the mass of a neutron is 1.00866 amu. The mass of a nitrogen-14 atom is 14.00307 amu.The mass defect of nitrogen-14 is amu. Round to the 5 decimal place. The nuclear binding energy of one nitrogen-14 atom is x 10A J. Round to 3 significant digits. A:

Revolt · Accepted Answer

"0.10851"; "1.62"; "-11"; 0.10851

Question 7

Identify the term being defined.strong electrostatic force✔ strong nuclear forcestrong centripetal forcegravitational attractions the force that keeps the nucleons bound inside the nucleus of an atom

Revolt · Accepted Answer

✔ strong nuclear force; the force that keeps the nucleons bound inside the nucleus of an atom: strong nuclear force; the amount of energy needed to split the nucleus into individual protons and neutrons: nuclear binding energy; the difference between the mass of the nucleons and the mass of the atom: mass defect

Question 8

Which items are directly related to radioactive decay?

Revolt · Accepted Answer

E = mc2; mass defect

Question 9

Which of these statements explains the difference between nuclear binding energy and the strong nuclear force? Check all that apply.

Revolt · Accepted Answer

Nuclear binding energy is the energy needed to separate nuclear particles.; The strong nuclear force holds an atom’s protons and neutrons together.; Nuclear binding energy can be calculated using E = mc2.

Question 10

Calculate the mass defect for oxygen-16 given this data. Round to the 5 decimal place.mass of an oxygen-16 atom: 15.994914 amumass of a proton: 1.00728 amu mass of a neutron: 1.00866 amumass defect = ⇒ 0.13261 amu

Revolt · Accepted Answer

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The Nucleus Answers

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