Ответы на вопрос:
Mr( al2o3*2sio2*2h2o)=2*27+3*16+2*28+4*16+4*1+2*16=258mr(o)=16*3+16*4+16*2=144ω (o)=144/258=0.559=55.9%mr(h)=4*1=4ω( h)=4/258=0.016=1.6%mr(si)=28*2=56w(si)=56/258=0.217=21.7%
Mr( al2o3*2sio2*2h2o)=2*27+3*16+2*28+4*16+4*1+2*16=258w(o)=144/258=0.559=55.9%w(h)=4/258=0.016=1.6%w(si)=56/258=0.217=21.7%
hcl + koh = kcl + h2o
3hcl + fe(oh)3 = fecl3 + 3h2o
h2so4 + 2koh = k2so4 + 2h2o
3h2so4 + 2fe(oh)3 = fe2(so4)3 + 6h2o
koh + fe(oh)3 = kfeo2 + 2h2o
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