H2SO4
Mr(H2SO4) = 1×2 + 32 + 16×4 = 98
W(H) = (2 : 98) × 100% = 2,04%
W(S) = (32 : 98) × 100% = 32,65%
W(O) = 100 - (2,04 + 32,65) = 65,31%
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H2SO4
Mr(H2SO4) = 1×2 + 32 + 16×4 = 98
W(H) = (2 : 98) × 100% = 2,04%
W(S) = (32 : 98) × 100% = 32,65%
W(O) = 100 - (2,04 + 32,65) = 65,31%