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ドライアイスはCO₂なので分子量を44として計算します。
体積は(5.6×10⁻⁸)³(cm³)
質量は(5.6×10⁻⁸)³×1.67(g)
物質量は(5.6×10⁻⁸)³×1.67×1/44(mol)
分子の個数は(5.6×10⁻⁸)³×1.67×1/44×6.0×10²³=3.999・・・≒4
よって4個

間違っていたらすみません

せいろん

ありがとうございます!

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