### heisenberg, calculating kinetic energy

Posted:

**Thu Oct 17, 2019 10:05 pm**Use the uncertainty in velocity (3.4x10^10 m/s) to calculate the electron's uncertainty in kinetic energy. Then calculate the uncertainty in kinetic energy per mole of electrons (that is, per mole of hydrogen atoms).

I'm not quite sure where to start. I tried plugging the velocity and mass of electron into KE=1/2mv, but that didn't work.

I'm not quite sure where to start. I tried plugging the velocity and mass of electron into KE=1/2mv, but that didn't work.