Calculate the kinetic energy of two alpha particles

[emmadun]

if lithium 7 3 captures proton, it is divided into two alpha particles. Calculate the kinetic energy of the alpha particles. the proton energy can be neglected and the mass of the nucleus of Li is 7,01601u.
I only know how to write the equation: 3Li7 + 1H1 → 2He4 + 2He4

Can anyone help me? How do i calculate the kinetic energy of the alpha particles??
p.s sorry I am a beginner in physics and I am trying really hard to solve these kind of problems.

Mentor Note -- Thread moved from the technical forums so now Homework Template is shown.

 

[mathman]

Simple solution: Add the rest masses of both sides of the equation. The difference is then energy. Assuming no gamma rays, the energy becomes kinetic energy of the two alpha particles.

 

[emmadun]

AH THANK YOU! you saved me