Объяснение:
Mr(H2SO4) = 1*2 + 32 + 16*4 = 98
W(O) = Ar(O) *n / Mr(H2SO4) *100% = 16*4 / 98 *100% =65%
Объяснение:
Mr(H2SO4) = 1*2 + 32 + 16*4 = 98
W(O) = Ar(O) *n / Mr(H2SO4) *100% = 16*4 / 98 *100% =65%