Question

urgenttttt va rogg.......​

Answer 1

Na: S: O = 2: 1: 4

=> 2 at Na + 1 at. S + 4 at. O

=> F.chimica = Na2SO4

C: H = 3: 1

C = 3/12 = 0,25

H = 1/1 = 1          : 0,25

=> F.chimica = CH4

27,27% C + 72,72% O

C = 27,27/12 = 2,27

O = 72,72/16 = 4,54 : 2,27

=> F.cimica = CO2