发布时间:2025-02-07 11:53:38
水垢是沉积在容器内壁上的碳酸钙形成的。可以用稀盐酸或醋酸浸泡后冲洗。
2HCl + CaCO3 = CaCl2 + H2O + CO2↑
2CH3COOH + CaCO3 = (CH3COO)2Ca + H2O + CO2↑
要孩子上学北京地铁4号线公益西桥上车早上6点50到7点人多吗挤不挤能有座位吗向北方向坐车
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