Carbon-11 decays by positron emission: 116c → 115b + 01e the decay occurs with a release of 2.87 ⋅ 1011 j per mole of carbon-11. when 1.00 g of carbon-11 undergoes this radioactive decay, g of mass is converted to energy.

of mass is converted to energy.

Explanation:

Mass of 1 mole of carbon-11 = 11 g

Moles of carbon-11 in 1 gram :

Energy released when 1 mol of carbon-111 undergoes positron emission: E

Then energy released when 0.0909 moles of carbon-11 undergoes positron emission:

Let the mass converted into energy during the process be m

Using Einstein equation of energy:

E = energy released

m = mass converted into energy

c = speed of the light

m =

of mass is converted to energy.