Question

the nuclear reaction gives off a total of 10 power 17 j energy. how much mass is spent in this process?

Answer 1

We know from Einstein's equation of matter and energy relation that ,

E= mc²

So,

10^17 = m × (3 ×10^8)²

m= (10^17)/(3 ×10^8)²

m=10/9

m=1.11 kg

So,

1.11 kg of mass was spend in the process