J.R. S. answered 04/24/21
Ph.D. University Professor with 10+ years Tutoring Experience
Iron(III) nitrate = Fe(NO3)3 and it is soluble (aq)
Magnesium sulfate = MgSO4 and it is soluble (aq)
2 Fe(NO3)3(aq) + 3 MgSO4 (aq) ==> Fe2(SO4)3(aq) + 3 Mg(NO3)2 (aq) ... balanced equation
NOTE: Since all compounds are soluble (aq)...there is NO REACTION