How do I calculate the heat released by 1 mole MgO

Given:
0.5 g of MgO
Heat gained by acid is 1337.6 kJ

I calculated the moles for MgO which I got 0.0125
I'm not sure if I'm on the right track..

1 answer

Is that an aqueous solution?
1337.6 kJ/0.0125 = ? kJ = heat released by 1 mol MgO
I didn't check the mol calculation for MgO.