Chemistry
Senior High
化学反応式をイオン反応式で表すやり方が分かりません。
何が消えて何が残るかをどうやって判断するんですか？
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次の化学反応式をイオン反応式で表せ。
(1) Zn + H₂SO4- → ZnSO₂ + H₂
(2) HCI + NaOH-NaCl + H₂O
(3) Na₂CO3 +CaCl₂2NaCl + CaCO3
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