The energy equivalent of the particular mass is given as:\\\\(E=mc^2\\\\)mass is given as \\\\(=0.5g=0.5\ imes 10^{-3}\\ kg\\\\)and the speed of light \\\\((c)=3\ imes 10^8\\ m/s\\\\);.So, \\\\(E=0.5\ imes10^{-3}\ imes(3\ imes 10^{8})^2\\\\)\\\\(E=4.5\ imes 10^{!3}\\ J\\\\)