2007-07-25 09:06:01 · 6 answers · asked by lamide e 1 in Science & Mathematics ➔ Chemistry
easy 407.
2007-07-25 09:08:36 · answer #1 · answered by bibbittybobittyboo 3 · 0⤊ 1⤋
One way to look at it is to say I want 2*gmw S over the total
gmw's which is [2*N + 8*H + 2*S +8*O]. Weight over weight, which I will multiply by 100 to get required %w/w.
2007-07-25 22:19:34 · answer #2 · answered by BB 7 · 0⤊ 0⤋
(NH4)2S2O8 Mol. mass = 2x14 + 1x8 + 32x2 + 16x8
= 228g/mol = 228g
S2 = 64g/mole = 64g
(64 ÷ 228) x 100 = Sulphur = 28% w/w
2007-07-25 09:26:00 · answer #3 · answered by Norrie 7 · 1⤊ 0⤋
28%
2007-07-25 09:09:48 · answer #4 · answered by leon 1 · 0⤊ 0⤋
the molecular weight is 228.2038g/mol
therfore %w/w=(32.066g/228.2038)*100=
14%*2=28%
2007-07-25 09:12:33 · answer #5 · answered by scott k 4 · 4⤊ 1⤋
pikaboo
2007-07-25 09:15:21 · answer #6 · answered by Anonymous · 0⤊ 1⤋