Question

How many O atoms are in 1.25 mol of SO2

Answer 1

The number of O atoms that ate in 1.25 mol of SO2 is 2.5 moles

calculation

moles of O= total number O atoms in SO2 x 1.25 moles

The number of O atoms in SO2 = 1 x2 = 2 atoms

moles is therefore= 2 x 1.25 moles = 2.5 moles