A sample of radium
_(88)^(224)Ra
(atomic mass
=224.020186u,T_((1)/(2))=3.66
days) contains
N_(0)=1.04\times 10^(21)
nuclei and undergoes
a
decay to produce radon
_(86)^(220)Rn
(atomic mass
=220.011368u
). The atomic mass of an
a
particle is 4.002603 u . The latent heat of fusion for water is
33.5\times 10^(4)(J)/(k)g
. With the energy released in 3.66 days, how many kilograms of ice could be melted at
0\deg C
m=
Number Units