SiO2 - оксид кремния(IV)
Mr(SiO2) = 28 + 16*2 = 60
w(O) = 16*2/60 = 0,533 = 53,3%
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SiO2 - оксид кремния(IV)
Mr(SiO2) = 28 + 16*2 = 60
w(O) = 16*2/60 = 0,533 = 53,3%