Question

Old stars Obtain part of their energy by the fusion of three alpha particles to form a 126C nucleus , whose mass is 12.0000 u. How much energy is given off in each such reaction

Answer 1

Answer:

Explanation:

Mass of 3 alpha particles =3×4.002604 u

=12.007812 u.

Mass of 1  

6

​

C

12

atom=12.007812 u

Mass Defect =△m=12.007812−12.000000=0.007812

Energy released =0.007812×931.5=7.2768 MeV