Question

How much mass energy could be obtained from the complete conversion of a 235 g hamburger?

a)7.05 x 107 J
b)7.05 x 1010 J
c)7.57 x 1011 J
d)2.12 x 1016 J

Answer 1

E = mc²
E = 0.235 kg · (3×10⁸ m/s)² = 0.235 · 9×10¹⁶ kg·m/s²
E = 2.115×10¹⁶ J
The answer is d) 2.12×10¹⁶ J