Respuesta :

1 Molecule of MgCl2 = 95.11

1 Mole in 1 molecule of MgCl2 is  

1

95.11

= 0.010514

Or Total moles in 309 gm of MgCl2 is #0.010514*309 = 3.2488  

Answer is 3.2488 moles