a) Mg(NO3)2
mMg(NO3)2=24 u+2*14 u+6*16 u=148 u
b) CuSO3
mCuSO3=64 u+32 u+3*16 u=144 u
c) ZnCl2
mZnCl2=65 u+2*35,5 u=136 u
d) Ba3(PO4)2
mBa3(PO4)2=3*137 u+2*31 u+8*16 u=601 u
e) Al2(SO4)3
mAl2(SO4)3=2*27 u+3*32 u+12*16 u=342 u
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a) Mg(NO3)2
mMg(NO3)2=24 u+2*14 u+6*16 u=148 u
b) CuSO3
mCuSO3=64 u+32 u+3*16 u=144 u
c) ZnCl2
mZnCl2=65 u+2*35,5 u=136 u
d) Ba3(PO4)2
mBa3(PO4)2=3*137 u+2*31 u+8*16 u=601 u
e) Al2(SO4)3
mAl2(SO4)3=2*27 u+3*32 u+12*16 u=342 u