Question

sa se calculeze numarul de atomi de paladiu care se gasesc in 212 g paladiu

Answer 1

$M_{Pd}=106$

(1 mol) 106 g Pd..........6,022*10²³ atomi Pd
            212 g Pd...........   x

$x= \frac{212*6,022* 10^{23} }{106}= 12,044*10^{23} atomi$

Asadar, in 212 g Pd se gasesc 12,044*10²³ atomi.