Carbon- 11 Decays by Positron Emission

Carbon- 11 decays by positron emission:

The decay occurs with a release of 2.87 × 10¹¹ J per mole of carbon- 11. When 4.00 g of carbon- 11 undergoes this radioactive decay, _ _ g of mass is converted to energy.

A) 1.28 × 10^{- 2}
B) 1.16 × 10^{- 3}
C) 3.48 × 10⁵
D) 1.16 × 10^{- 6}
E) 8.62 × 10²