Avogadro's Constant Questions

Does anyone know how to calculate the expected mass of one mole of alpha particles (4He2+ ions)? The questions tells you that the mass of one proton is 1.6725 x 10^-24 and the mass of one neutron is 1.6748 x 10^-24 and the Avogadro constant is 6.0225 x 10^23.
Any help would be appreciated as I'm really stuck.
Thanks

How many protons and how many neutrons make up one alpha particle?

Knowing that work out the mass of one alpha particle.

Now work out the mass of 1 mole of alpha particles.

Thank you so much
I got 8.0636457 is that right?

1.0039 x 10^-23 ?

No - you were closer the first time!

An alpha particle is a helium atom without its two electrons (which have a negligible mass). What's the mass of a mole of helium atoms?

Ah thank you that makes a lot more sense

(1.6725X10^-24 X 2) + (2X 1.6748X10^-24 X 2) = 6.6946 x 10^-24
6.6946 x 10^24 x 6.0225 x 10^23 = 4.03182285

Is it right now?