Stuck on a Nuclear Physics question

I've been stuck on this physics question for ages and I still can't figure out the answer.

The net effect of this process is to convert four protons into one Helium-4 nucleus and release a large amount of energy. The overall reaction is:

4H --> He + 2Beta Particles

together with the emission of 2 neutrinos and 2 gamma particles
b) What is (i) the total mass loss (ii) the total energy released in the overall reaction?

Thanks in advance.

Use the mass deficit equation for the mass loss and for total energy released I think it's mass loss as energy

Whats the mass defict equation, havent heard of it before.

Whats the mass defict equation, havent heard of it before.

A level?

have you got any data on the rest mass of a He-4 nucleus and a proton... either on the data sheet or from an earlier section of the question?

we are told to use the data sheet for the masses of a proton and positron; the mass of a helium nucleus is 4.00151u.

we are told to use the data sheet for the masses of a proton and positron; the mass of a helium nucleus is 4.00151u.

Anything funny happened to the masses of the products of the reaction compared to the 4 protons going in?

The nucleus of hydrogen is a proton, u have the mass of proton on formula sheet.

Do initial mass-final mass to work out the change in mass, leave in terms of the atomic mass unit up until this point, then convert to kg.

Plug into E=mc^2 and find the energy lost