Question

Se descompun termic 434 g oxid de mercur,HgO.Sa sw afle cantitatiile de oxigen si mercur rezultate

Answer 1

MHgO=217g/mol

n=m/M=434/217=2 moli HgO

HgO -> Hg + 1/2O2

1 mol HgO............1 mol Hg,,,,,,,,,0,5 moli O2
2 moli HgO...........2 moli Hg..........y=1 mol O2