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AlCl3=27+35.5✕3=133.5g/mol
26.7gのAlCl3は 26.7 / 133.5=0.2mol
AlCl3 1個にはAl3+1個とCl-3個の4個のイオンが含まれるので、0.2✕4=0.8molのイオンが含まれる。
アボガドロ定数を6.0✕10^23個とすると、0.8✕6.0✕10^23=4.8✕10^23個
わかりました！！
ありがとうございます😊
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アボガドロ定数6.0✕10^23個/mol