Odpowiedź:
mCl2= 2× 35,5=71u
mO3= 3×16u=48u
mNa2O= 2× 23u+ 16u= 46u+ 16u= 62u
mAg2S= 2× 108u+ 32u= 216u+ 32u= 248u
mSO3= 32u+ 3×16u= 32u+ 48u= 80u
mMgCl2= 24u+ 2× 35,5u= 24u+ 71u= 95u
mFeCl3= 56u+ 3× 35,5u= 56u+ 106,5u= 162,5u
mP2O5= 2×31u+ 5×16u= 62u+ 80u= 142u
mCu2S= 2× 64u+ 32u= 128u+ 32u=160u
Wyjaśnienie: