Respuesta :

mass = mol x Mr
= 8.90 x (24.3 + (2)(35.5))
= 848.17g
Moles= weight of the given compound /molecular mass of that compound. Therefore Weight of MgCl2= moles of MgCl2 x molecular mass of MgCl2 = 8.90 moles x (molecular weight of Mg+ 2 x molecular weight of Cl) = 8.90 x (24 + 2x 35.5) ~ 845. 5gm.