Given that the mass of a proton is 1.673*0^-24 g and the mass of an electron is 9.11*10^-28 g, what is the difference expressed in Kilograms between the mass of a proton and the mass of an electron.
The mass of a proton is equal to `1.673*10^-24` g and the mas of an electron is equal to `9.11*10^-28` g.
One kilogram is `10^3` g or `X` g is `X*10^-3` kg.
This gives the difference between the two masses is `1.673*10^-24 - 9.11*10^-28` = `1.672*10^-24` g = `1.672*10^-27` kg
The difference between the mass of an electron and a proton is equal to 1.672*10^-27 kg