Chemistry: Calculate the wavelength of an electron traveling with a speed of 2.65*10^6 m/s

Calculate the wavelength of an electron traveling with a speed of 2.65*10^6 m/s

Formula used Wavelength = h (Planck's constant) / m (mass) * v (velocity)
h (Planck's constant) = 6.626 * 10^(-)34


v (velocity; the given) = 2.65 * 10^6

how do I find the mass?
Your answer should come out to 9.11*10^(-)31
but I do not know how to get there, please help :)

Hello

mass of the electron = 9.11*10^-31 kg
the wavelength is
λ = h/(m*v) = 6.626*10^-34 Js/(9.11*10^-31 kg*2.65*10^6 m/s) = 2.74*10^-10 m

Somehow you seem to have mixed up wavelength with the mass of the electron, or what?

Regards