Question

1,12L(c.n.)H2
calculati nr moleculelor

Answer 1

transformi volumul in nr de moli =>1,12/22,4=0,05
si nr molecule=nr moli*NA(numarul lui Avogadro)=0.05*6,022*10²³

Answer 2

1,12 litri H2             Se transf. volumul de H in moli H2
nr.molecule            1,12:22.4=0.05 moli H2   23
                            1mol H2-----------6,024 .10      molecule
                           0,05 moli H2---------X
                         
                                                     23
                            X=0,05.6,024.10     molecule