Calculating Energy of He-4 Formation from 2p + 2n

[PublicEnemy]

Homework Statement

How much energy, in joules, is released when one mole of helium-4 nuclei is formed from its individual protons and neutrons?

Homework Equations

2p + 2n ----> He-4 (p is proton n is neutron)

The Attempt at a Solution

Book sucks at explaining so I am not quite sure where to start. Calculate energy for each nucleon maybe?

 

[Borek]

You will need exact masses of protons, neutrons and product.