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阿Q吧 > 世界卫生组织（WHO）将某氧化物RO2列为A级高效安全灭菌消毒剂．实验测得该氧化物中R与O元素的质量比为71

世界卫生组织（WHO）将某氧化物RO2列为A级高效安全灭菌消毒剂．实验测得该氧化物中R与O元素的质量比为71

2025-04-06 21:30:02

推荐回答（1个）

回答1：

由题意，某氧化物的化学式为RO₂，实验测得该氧化物中R与O的质量比为71：64，设R的相对原子质量为x，则x：（16×2）=71：64，x=35.5；氯原子的相对原子质量为35.5，故RO₂的化学式为ClO₂．
故选B．

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