DE BROGLIE [ENDORSED]

[Irma Ramos 2I]

How do we find the mass of atom given the molar mass of the element in order to use the de broglie equation??

[Vivian Nguyen]

Is there a specific problem you can refer too? From the molar mass you can calculate the mass of an atom using Avogadros number. So you would take (molar mass/ 1 mol)× (1 mol/ 6.022x10^23 atoms) which would give you the mass per atom of that element.

Simply divide the molar mass by 6.022x10^23

[Jessica Jones 2B]

When using the de broglie for an electron we use the known mass 9.11^-31 kg.
Remember to always use SI units when solving, which are kg.

[Chem_Mod]

Great answers here.

You can also discuss this today (Thursday) in the many support hours I have organized:

Chemistry & Biochemistry, 4222 Young Hall
Victoria Ford 12-1 pm, Ronald Yang 12-1 pm, Karen Leung 1-2pm

STEM Learning Center, Boelter Science & Engineering Library 8251
Franklin Liu 2-4 pm

Five (physical) hours available today (Thursday), in addition to Chemistry Community.

Good luck with your midterm.