Calculating Binding Energy of Neutron in 14N

[NikkiNik]

Homework Statement

Calculate the binding energy of a neutron in 14N

Homework Equations

E=mc^2

delta m * 1u + E

The Attempt at a Solution

The mass of Nitrogen (from periodic table): 14.007amu

Calculated mass of N:
7 protons (7 * 1.007277amu) + 7 neutrons (7* 1.008665amu) + 7 electrons (7*0.0005486)
=14.115amu

delta m=0.10839 amu

delta m * 1u= 1.0096e2 MeV

After I got the total binding energy I divided by 14 to get the binding energy of one neutron which was 7.21 MeV which was incorrect.

 

[rock.freak667]

When you had $\Delta m =0.10839 amu$

did you eventually multiply by 1amu to convert to kg and then multiply by c²?