Carbon-11 Decays by Positron Emission: C → B

Carbon-11 decays by positron emission: C → B + e The decay occurs with a release of 2.87 × 10¹¹ J per mole of carbon-11. When 5.00 g of carbon-11 undergoes this radioactive decay, ________ g of mass is converted to energy.

A) 1.45 × 10^-3
B) 4.35 × 10⁵
C) 1.45 × 10^-6
D) 6.90 × 10²
E) 1.59 × 10^-2