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化學方程式是用化學式表示化學反應的式子,是在國際上通用的一種化學用語.例如:2H2O 通電 2H2↑+ O2 ↑ HCl + AgNO3 === AgCl↓ + HNO3 方程式中等號左邊是反應物,等號右邊是生成物,兩種物質用加號連接.如果反應前沒...
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