Posted by Emily on .
I'm sorry if it's a lot, but I want to make sure I didn't do any mistakes on this worksheet. Thanks!!1. If the mass of a Ne20 atom is 19.9924 amu, calculate its binding energy. (I got 2.578 x 10^11 Joules)2. If the mass of a Ca40 atom is 39.9626 amu, calculate its binding energy. (I got 5.4876 x 10^11 Joules)3. Calculate the binding energy per nucleon for He4. (I had no idea how to do this one...does anyone have any ideas??)4. If the binding energy per nucleon for U235 is 7.5702 MeV, which can offer the greater amount of energy per mass unit: He4, or U235? (I got He4)Does anyone spot any mistakes above? Thanks soooo much for helping!!!

Physics 
drwls,
To get binding energy in MeV, use the formula at this website:
http://library.thinkquest.org/17940/texts/binding_energy/binding_energy.html
There are 1.602*10^12 J per eV, or 1.602*10^6 J per MeV
For the binding energy of He4, divide the binding energy of He4 by the number of nucleons (4)