Đơn chất:
\(O_2-PTK:32\left(đvC\right)\\ Ba-PTK:137\left(đvC\right)\)
Hợp chất:
\(HCl-PTK:36,5\left(đvC\right)\\ BaSO_3-PTK:217\left(đvC\right)\\ NaHSO_4-PTK:120\left(đvC\right)\\ BaSO_4-PTK:233\left(đvC\right)\\ Ba\left(OH\right)_2-PTK:171\left(đvC\right)\\ H_2SO_4-PTK:98\left(đvC\right)\\ Fe\left(NO_3\right)_2-PTK:180\left(đvC\right)\\ Al_2O_3-PTK:102\left(đvC\right)\\ Fe\left(OH\right)_3-PTK:107\left(đvC\right)\)
Đơn chất: O2, Ba
Hợp chất: HCl, BaSO3, NaHSO4, BaSO4, Ba(OH)2, H2SO4, Fe(NO3)2, Al2O3, Fe(OH)3
PTKO2 = 16.2 = 32(đvC)
PTKHCl = 1.1 + 1.35,5 = 36,5 (đvC)
NTKBa = 137 (đvC)
PTK BaSO3 = 137.1 + 32.1 + 16.3 = 217 (đvC)
PTK: NaHSO4 = 23.1 + 1.1 + 32.1 + 16.4 = 120 (đvC)
PTK BaSO4 = 137.1 + 32.1 + 16.4 = 233(đvC)
PTK Ba(OH)2 = 137.1 + 16.2 + 1.2 = 171(đvC)
PTK H2SO4 = 1.2 + 32.1 + 16.4 = 98 (đvC)
PTK Fe(NO3)2 = 56.1 + 14.2 + 16.6 = 180(đvC)
PTK Al2O3 = 27.2 + 16.3 = 102(đvC)
PTK Fe(OH)3 = 56.1 + 16.3 + 1.3 = 107(đvC)