Ответ:

дано

H2SO4

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W(H2)-?

W(S) - ?

W(O) - ?

M(H2SO4) = 1*2+32+16*4 = 98 g/mol

W(H) = 1*2 / 98 * 100% = 2.04 %  = 0.0204

W(S) = 32 / 98*100% = 32.65 %  = 0.3265

W(O) = 16*4 / 98 * 100% = 65.31% = 0.6531

Ar(H) = 1 g/mol

Ar(S) = 32 g/mol

Ar(O) = 16 g/mol

H : S : O = 0.0204 / 1  : 0.3265 / 32 : 0.6531 / 16

H : S : O = 0.02 : 0,01 : 0.04 = 2 : 1 : 4

Объяснение: