## Dino Nuggets 13a

$\lambda=\frac{h}{p}$

KDang_1D
Posts: 127
Joined: Fri Aug 30, 2019 12:15 am
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### Dino Nuggets 13a

Essentially, the question is "what is the kinetic energy of one potassium ion with a wavelength of 11.23 nm?"

We used the mass 39.1 g/mol for the potassium ion. Does that mean that the mass of ions and neutral elements are the same? Why wouldn't we have to subtract 9.11x10-31kg from the mass of the neutral element (converted from g/mol to kg/atom) to get the mass of the 1+ cation?

Haley Dveirin 1E
Posts: 101
Joined: Sat Jul 20, 2019 12:17 am

### Re: Dino Nuggets 13a

electrons have such a small mass that the mass of the atom is essentially the same as the ion.