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:
\(n = \frac{m}{MM}\)
Solving:
\(n = \frac{m}{MM}\)
\(9.03 = \frac{m}{120}\)
\(m = 9.03*120\)
\(\boxed{\boxed{m = 1083.6\:g}}\end{array}}\qquad\quad\checkmark\)