How much energy is released in kJ/mol? The atomic mass of 28Mg is 27.98388 amu and the atomic mass of 28 Al is 27.98191 amu

Question

anonymous · Answer

I know that the equation that needs to be used is E=($$DeltaM$$c^2

anonymous · Answer

$$E=(\Delta M)c ^{2}$$

anonymous · Answer

Are you trying to find the energy for both of those?

anonymous · Answer

c^2 is (3.0 x 10^8 m/s) :)
As for the units you have, you have to convert amu into kg for E=mc^2 to work.

The conversion for amu into kg is: 1.66 x 10^-27 kg=1 amu :)

anonymous · Answer

Convert the amu amounts into kg, then plug in the value for c, and the values you get when you convert amu into kg, and you got your energy. Hopefully that helps :D

anonymous · Answer

I am assuming that I have to find the mass defect between the two and then find the energy of that.

anonymous · Answer

Well...mass defect between the two meaning 28Mg-28Al?
Or find the mass defect of each element, then convert the mass defect into binding energy?

anonymous · Answer

between the two

anonymous · Answer

it is going to be very small. I get .00197. Then would I convert that to kg? After coverted to kg how do I get kJ/mol??