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Wikiwand
5 年
二苯铬
事实速览 二苯铬, 识别 ... 二苯铬需要在无氧条件下制备(舒伦克线)。它的首次合成是Fischer-Hafner法,也就是将三氯化铬、铝和苯在三氯化铝存在下反应而成。这会形成对空气稳定 [6] 的阳离子。之后,它被连二亚硫酸钠还原,生成二苯铬。 [7] 二苯铬有18个价 ...
2 天
Eleições 2024 em Inhapi (AL): quais são os candidatos a prefeito e vereador
Confira a lista completa dos candidatos a prefeito e vereador de Inhapi (AL) que concorrerão nas Eleições 2024 ...
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Alabama mass shooting
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CA bill to protect kids online
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Sesame Place suit verdict
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Pandas leaving for China
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SC 1st execution in 13 years
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