Question

When nuclear fission occurs, some mass is lost. Where does the mass go?

Answer 1

The situation when nuclear fission occurs, some mass is lost is also called the mass defect and as a result the matter turns into energy. If you want to know where the mass does go Albert Einstein will be your helping hand : E = mc^2. Using this formulae you will solve the task and find out the direction of mass.

Step-by-step explanation:

Answer 2

The situation when nuclear fission occurs, some mass is lost is also called the mass defect and as a result  the matter turns into energy. If you want to know where the mass does go  Albert Einstein will be your helping hand :  E = mc^2. Using this formulae you will solve the task and find out the  direction of mass.