How many ATOMS of phosphorus are present in 2.48 grams of phosphorus pentachloride

Answer 1

phosphorus pentachloride is Cl5 P

There are 6.02 x 10^23 atoms in 1 mol

The Molar Mass of C5P is 208,5 g

numbers of mol= 2.48 /205.5=0.012 mol

numbers of atoms=  6.02 x 10^23 atoms x 0.012=0,07 x 10^23