Відповідь:Ar(H) = 1
Ar(S) = 32
Ar( O) = 16
Ar(H2SO4) = 98
W(O) = 16*4/98 *100% = 64/98 *100%= 0.65 * 100% = 65%
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Відповідь:Ar(H) = 1
Ar(S) = 32
Ar( O) = 16
Ar(H2SO4) = 98
W(O) = 16*4/98 *100% = 64/98 *100%= 0.65 * 100% = 65%