Răspuns :
nr Moli = masa comus / masa molara
masa molara calciu= 40 g/mol
masa compus =8 g
=> nr moli = 8/40
=1/5
=0.2 moli
masa molara calciu= 40 g/mol
masa compus =8 g
=> nr moli = 8/40
=1/5
=0.2 moli