Question

Calculate the mass, in grams, of 532.0 atoms of cadmium, (1 mol of Cd has a mass of 112.41g)

Answer 1

Since we know that
1.0 mol of any substance = 6.022 × 10^23 atoms of that substance

Molar mass = 112.41 g
Number of atoms = 532.0 atoms
Since we know
6.022 × 10^23 atoms of Cd = 112.41 g of Cd

So
532 atoms of Cd = (112.41×532)/(6.022×10^23) g of Cd = 9.93×10^-20g of Cd


Therefore, the mass of 532.0 atoms of cadmium is 9.93×10^-20 grams