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- As per the mass-energy equivalence principle, energy and mass are interconvertible. Thus when energy is lost in chemical, nuclear, or any other energy transformation the system will also lose mass.
- Q value for a reaction is the amount of energy absorbed or released during the nuclear reaction and will be equal to the energy equivalent to the lost mass.
- Q value of a reaction is given by,
Here mR is the mass of the reactant, mP is the mass of the product, and c is the speed of flight.
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