Question

cuantos gramos de oxigeno se obtienen al reaccionar 120 g de hgo

Answer 1

                                 2HgO → 2 Hg  +  O2

Mm HgO = 216.58 g/mol
          O = 32 g/mol

g O2 = 120 g HgO  x  1 mol HgO  x  1 mol O2   x  32 g O2
                                  ````````````````    ``````````````     ````````````
                                 216.58 g HgO   2 mol HgO    1 mol O2

g O2 = 8.87 g de oxigeno