Question

Silver nanoparticles are embedded in clothing fabric to kill odor-causing bacteria. Silver crystallizes in an foc unit cell. a. How many unit cells are present in a cubic silver particle Silver radiuss 172 pm with an edge length of 25 nm? If there are 1360 ug of silver per sock, how many of these particles does this mass correspond to?

Answer 1

Accosding given in question to conditon we have Fcc tatfice 25 2 1-41 8-84 Pm . fos cubic cel (*) - 172 Pm . of siver -1360 gm pes sock. Mass no op unitce psesent in cubfc ce 17 2 19.4S ,84 19 paotteles

werght sfver- longm. Now atomic 17 9033 gm So 19 x l07 = But qiven mass = 1360 90 no pasticles in this mass s 1360 = 13