Determine the amount of So2 substance contains 6 moles of oxygen atoms?

Given:
n (O in SO2) = 6 mol

To find:
n (SO2) -?

1) 1 mol of SO2 (sulfur (IV) oxide) contains 2 mol of O (oxygen atoms);
2) Calculate the amount of sulfur (IV) oxide substance. To do this, draw up a proportion and solve it:
1 mol SO2 – 2 mol O;
x mol SO2 – 6 mol O;
x = 6 * 1/2 = 3 mol;
n (SO2) = x = 3 mol.

Answer: The amount of SO2 is 3 mol.