Kemiske formler og formelmasseberegning

H2O -> 2x Hydrogen H, Oxygen O -> Vand -> 1,00794 x2 + 15,9994 = 18,01528 u

HBr -> Hydrogen H, Brom Br -> Hydrogenbromid -> 1,00794 + 79,904 = 80,91194 u

H2SO4 -> 2x Hydrogen H, Svovl S, 4x Oxygen O -> Svovlsyre -> 1,00794 x2 + 32,066 + 15,9994 x4 = 98,07948 u

NaCl -> Natrium Na, Chlor Cl -> NatriumChlorid -> 22,989770 + 35,453 = 58,453 u

H2O-> 2x Hydrogen H -> Hydrogen -> 1,00794 + 1,00794 = 2,01588 u

O2 -> 2x Oxygen O -> ilt -> 15,9994 + 15,9994 = 31,9988 u

NH3 -> Nitrogen N, 3x Hydrogen -> Ammoniak -> 14,00674+1,00794+1,00794+1,00794 = 17,03056 u Na2CO3 -> 2x Natrium Na, Carbon C, 3x Oxygen O, -> Soda -> 22,989770+22,989770+12,0107 + 15,9994 + 15,9994 + 15,9994 = 105,98844CuSO4 -> Kobber Cu, Svovl S, 4x Oxygen O -> Kobbersulfat -> 63,546 + 32,066 + 15,9994 + 15,9994 + 15,9994 + 15,9994 = 159,6096 u CaCO3 -> Calcium Ca, Carbon C, 3x Oxygen O -> Calciumcarbonat-> 40,078 + 12,0107 + 15,9994 + 15,9994 + 15,9994 = 100,0869 uCaSO4 ->Calcium Ca, Svovl S, 4x Oxygen O -> Calciumsulfat -> 40,078 + 32,066 + 15,9994 + 15,9994 + 15,9994 + 15,9994 = 136,1416 u