Respuesta :

Answer:

419.5 g BeCl2

Explanation:

M= mol solute/ L solution

mol solute= M * L solution

mol solute= (0.69 M) * (7.7 L)

mol solute=5.31 mol BeCl2

1 mol BeCl2  -> 79 g

5.31 mol BeCl2 -> x     x= 419.5 g BeCl2