Question

"a nuclear reaction, which gives off a total of 1.0 x 1017 j of energy, expends how much mass in the process?"

Answer 1

Hey!
We know:
E=mc2.
$m = \frac{e}{ {c}^{2} }$
m=(1.0×10^7)÷(3×10^8)^2.
m=1.11×10^-10kg.