calculate the percentage of sulphur in sodium thiosulphate, Na2S2O2

Answer 1

Done by mass S in total mass of Na2S2O3.
mass S = 2*32
total mass is 2*Na + 2*S + 3*O
Then %S = (64/total mass Na2S2O3)*100 = ?

Answer 2

Answer is 25.8% is sulphur in sodium thiosulphate

Answer 3

40.50

Answer 4

Ans)40.5