Units for the Work Function of a Metal

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Karishma_1G
Posts: 67
Joined: Fri Sep 28, 2018 12:18 am

Units for the Work Function of a Metal

Postby Karishma_1G » Sat Oct 13, 2018 1:02 pm

I am working on the pre-assessment for the Photoelectric Module. On question #27, it says that the work function for sodium is 150.6 KJ.mol^-1. However, I thought that the units for the work function is supposed to be just J. Do I need to convert KJ to J and then convert the mol^-1 to per Na atom? If I do these calculations I get 2.5 x 10^-19 - is this correct? Thank you in advance!

mcredi
Posts: 63
Joined: Fri Sep 28, 2018 12:16 am

Re: Units for the Work Function of a Metal

Postby mcredi » Sat Oct 13, 2018 5:59 pm

Yes, you do need to convert to joules beforehand but based on on decimal points your answer seems correct


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