Express 150 microgram mass into equivalent energy in electron volt.

Explanation

Here, `m=150"microgram" =150xx10^-6g=150xx10^-9kg, E=?`
form `E=mc^2=(150xx10^-9)(3xx10^8)^2=1.35xx10^(10)J`
`E=(1.35xx10^(10))/(1.6xx10^(-19))eV=0.843xx10^(29)eV`