Dados:
m (mass) = ?
n (Number of mols) = 9.03 mols
MM (Molar Mass) of MgSO4
Mg = 24 u
S = 32 u
O = 4*16 = 64 u
-----------------------------
MM of MgSO4 = 24+32+64 = 120 g/mol
Formula:
[tex]n = \frac{m}{MM} [/tex]
Solving:
[tex]n = \frac{m}{MM} [/tex]
[tex]9.03 = \frac{m}{120} [/tex]
[tex]m = 9.03*120[/tex]
[tex]\boxed{\boxed{m = 1083.6\:g}}\end{array}}\qquad\quad\checkmark[/tex]