(07年江苏卷) 阿伏加德罗常数约为6.02×1023mol-1,下列叙述正确的

(07年江苏卷) 阿伏加德罗常数约为6.02×1023mol1,下列叙述正确的是()

 

  A2.24LCO2中含有的原子数为0.3 ×6.02×1023

 

  B0.1L3 molL1NH4NO3溶液中含有的NH4数目为0.3 ×6.02×1023

 

  C5.6g铁粉与硝酸反应失去的电子数一定为0.3 ×6.02×1023

 

  D4.5 SiO2晶体中含有的硅氧键数目为0.3 ×6.02×1023

答案

答案D

解析:本题考查了阿伏加德罗常数的应用、晶体的计算等。

 

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