M(H2SO4) = 2*Ar(H) + Ar(S) + 4*Ar(O) = 2*1 + 32 + 4*16 = 98 г/моль
n(H2SO4) = m/M = 75/98 ≈ 0.77 моль
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M(H2SO4) = 2*Ar(H) + Ar(S) + 4*Ar(O) = 2*1 + 32 + 4*16 = 98 г/моль
n(H2SO4) = m/M = 75/98 ≈ 0.77 моль