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化学方程式配平
输入未配平的方程式，工具给出配平结果、配平过程，以及两侧原子数的核对表——后者才是真正证明配平成功的一步，也是最常被跳过的一步。
先配只出现在一个反应物和一个生成物里的元素，氧和氢留到最后，因为它们通常出现在多个物质里，早配会反复返工。
只能改系数，不能改下标——把 H₂O 改成 H₂O₂ 是把水换成了过氧化氢。配平完成后必须补上 (s)(l)(g)(aq)，漏写会扣分。
通常是某个元素只出现在一侧，说明化学式写错或缺少物质。工具会指出是哪个元素。
燃烧反应中很常见。整体乘以分母即可，工具会自动处理并显示原始比例。
