Using atomic mass tables, calculate the amount of energy...

Using atomic mass tables, calculate the amount of energy released from the fusion of one gram of ${ }^1 \mathrm{H}$ into ${ }^4 \mathrm{He}$. What percentage is this of the original rest mass energy of the hydrogen?***

Key Concepts

Energy Release Percentage

Calculating the energy release percentage involves comparing the energy liberated during a nuclear reaction to the original rest mass energy of the reactants. This ratio provides insight into the efficiency of mass-to-energy conversion in nuclear fusion reactions.

Mass-Energy Equivalence

Mass-energy equivalence, encapsulated in Einstein's equation E=mc², is the principle that mass can be converted into energy and vice versa. This fundamental concept underlies the calculations in nuclear physics, where small differences in mass result in significant energy releases.

Atomic Mass Tables

Atomic mass tables provide precise measurements of the masses of isotopes and atoms. These tables are essential for calculating the mass differences between reactants and products in nuclear processes, thereby determining the amount of energy released through mass-to-energy conversion.

Mass Defect and Binding Energy

The mass defect refers to the difference between the total mass of individual nucleons and the mass of the nucleus they form. This missing mass has been converted into binding energy, which holds the nucleus together, and is released during processes like fusion. The concept is central to understanding how energy is obtained from nuclear reactions.

Nuclear Fusion

Nuclear fusion is the process where lighter atomic nuclei combine to form a heavier nucleus, releasing energy due to the difference in binding energy between the reactants and the product. It is a fundamental process in stars and has potential for power generation, where the conversion of mass to energy is a critical factor.

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