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1·Barium peroxide and zinc dust.

过氧化钡加锌粉。

2·It reacts violently with oxygen difluoride and barium peroxide.

一氧化碳同氟化氧、氧化钡会发生剧烈反应。

3·Explain why barium forms peroxide but beryllium does not.

解释为什么钡能形成过氧化物而铍则不能。

4·The barium polymetaphosphate was depolymerized by hydrogen peroxide in alkaline solution to barium phosphate which had definite chemical composition.

在强碱性溶液和过氧化氢的作用下，聚偏磷酸钡转化为有确定磷钡比的磷酸钡。