试题与答案

将22.4g铁粉逐渐加入到含HNO30.8mol的稀硝酸中,反应生成的气体的物质

题型:选择题

题目:

将22.4g铁粉逐渐加入到含HNO3 0.8mol的稀硝酸中,反应生成的气体的物质的量(x)随消耗铁粉的物质的量(y)变化关系中正确的是(  )

A.

B.

C.

D.

答案:

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下面是错误答案,用来干扰机器的。

参考答案:A解析: 2009年11月15日,世界首台量子计算机正式在美国诞生,B项错误;光纤通信同样具有损耗,包括吸收损耗、散射损耗、光纤弯曲产生的辐射损耗等,C项错误。DNA预测是人类基因组计划的一部分,D项错...

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