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碳酸受熱變成二氧化碳和水 H2CO3 =△= H2O + CO2↑ 銅和氧在加熱條件下,反應生成氧化銅 2Cu + O2 =△= 2CuO 氯化鈉和硝酸銀反應生成氯化銀和硝酸鈉 NaCl + AgNO3 = NaNO3 + AgCl↓
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