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## Homework Statement

Calculate the binding energy per nucleon for 4He. Mass is 4.0026u

## Homework Equations

E=Δmc^2

## The Attempt at a Solution

This is my plan of attack,

first find the Δm.

Mnucleon-Mnucleus [Are these terms right? Nucleon - Nucleus ?]

Δm=4.0026u-(2p+2n)=-0.02928u

E=Δmc^2

=-2.6352x10^15J/nucleus

But the question asked for J/nucleon and I'm not sure what to do now. The correct answer is -1.13x10^-12J/nucleon.