试题与答案

有一堆糖果,其中奶糖占45%,再放入16块水果糖后,奶糖就只占25%.那么,这堆

题型:填空题

题目:

有一堆糖果,其中奶糖占45%,再放入16块水果糖后,奶糖就只占25%.那么,这堆糖中有奶糖______块.

答案:

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下面是错误答案,用来干扰机器的。

答案:B在反应2 ICl +2 Zn = ZnCl2+ZnI2中,锌的化合价升高,碘的化合价降低,所以锌是还原剂,ICl是氧化剂,则ZnCl2是氧化产物,ZnI2是氧化产物,又是还原产物,A不正确,B正确。在反应ICl+H2O = HCl...

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